## Theoretical Physics Seminars Archive

### Current year

Jan-Aug 2016

Raw date Event date Title Speakers Host Summary Links
20160901 Sept. 1, 2016 New Physics Searches at DUNE Kevin Kelly, Northwestern U. pubs
20160908 Sept. 8, 2016 The Minimal SUSY B-L Model: Simultaneous Wilson Lines and String Thresholds Burt Ovrut, University of Pennsylvania Chris H. pubs
20160922 Sept. 22, 2016 Relaxion from particle production Gustavo Marques-Tavares, Boston U. Jack pubs
20160929 Sept. 29, 2016 Little Conformal Symmetry Rachel Houtz, UC Davis Seyda pubs
20161006 Oct. 6, 2016 Higgs Relaxation Leptogenesis Lauren Pearce, Minnesota U. Seyda
20161013 Oct. 13, 2016 Dark matter annihilation via dark bound state formation Haipeng An, Caltech Paddy pubs
20161018 Oct. 18, 2016 Leaving Plato's Cave: Beyond the Simplest Models of Dark Matter and Flavor Symmetry Alexander Natale, KIAS, Seoul Kiel pubs
20161020 Oct. 20, 2016 Resummation for Differential Distributions Vincent Theeuwes, SUNY Buffalo John pubs
20161027 Oct. 27, 2016 New physics in Supernovae and IceCube Flavor Ratios Vedran Brdar, MITP, Mainz U. Paddy inSPIRE
Slides
20161103 Nov. 3, 2016 Towards Realistic Simulation of t-channel Single Top-Quark Production Hua Xing Zhu, MIT Ye inSPIRE
20161110 Nov. 10, 2016 Gravitational Waves as a New Probe of Dark Matter Bhupal Dev, Washington University St. Louis Zhen Abstract: A dark matter (DM) halo intervening along the line of sight of a gravitational wave (GW) signal could induce a change in the speed of GW. We show that this change of speed is observable with the current LIGO sensitivity for a class of self-interacting ultralight DM models, where the DM particles could form... More » inSPIRE
20161115 Nov. 15, 2016 Higgs Effective Field Theories - Systematics and Applications Claudius Krause, University of Munich; Note day and location: Tuesday, WH3NW Marcela
20161117 Nov. 17, 2016 Secluded Neutrinos: From the Early Universe to IceCube Ian Shoemaker, University of South Dakota Pilar HEPNAMES
20161124 Nov. 24, 2016 Happy Thanksgiving! No seminar
20161201 Dec. 1, 2016 The String Soundscape at Gravitational Wave Detectors Isabel Garcia-Garcia, University of Oxford Kiel
20161215 Dec. 15, 2016 INT Workshop on Neutrino-Nucleus Interactions Minerba Betancourt, Fermilab; Andreas Kronfeld, Fermilab Andreas Workshop website Note location: One West Andreas's slides
Minerba's slides
20170112 Jan. 12, 2017 The Fate of Axion Stars Hong Zhang, Ohio State U Inspires profile
20170119 Jan. 19, 2017 It's not just the Higgs Sally Dawson, BNL Paddy InSPIREs Profile
20170126 Jan. 26, 2017 Being flat with no symmetry Yue Zhao, University of Michigan Paddy Inspire profile
20170202 Feb. 2, 2017 Exploring the Higgs-top coupling at the LHC Dorival Gonçalves, Pittsburgh U. Pedro Inspires profile
Slides
20170209 Feb. 9, 2017 Extraction of the triple Higgs coupling at e+e- colliders using EFT Michael Peskin, SLAC Paddy InSPIRE profile
20170216 Feb. 16, 2017 Hindered M1 Radiative Decay of Υ(2S) and ηb(2S) from Lattice NRQCD Ciaran Hughes, Fermilab (local) Inspire profile
20170223 Feb. 23, 2017 Flavor Gauge Models Below the Fermi Scale (and why neutrinos matter!) Pedro Machado, Fermilab (local) Inspires profile
20170302 March 2, 2017 Neutrino-nucleus Interactions Noemi Rocco, IFIC Valencia Andreas inSPIREs profile
Slides
20170309 March 9, 2017 The Trouble with the Lattice Axial Charge Huey-Wen Lin, Michigan State U. Ciaran inSPIRE profile
20170314 March 14, 2017 Relaxed inflation Lorenzo Ubaldi, Tel Aviv University Roni InSPIRE profile
20170316 March 16, 2017 Few-hadron electroweak reactions from lattice QCD Raúl Briceño, Jefferson Lab Ciaran inSPIRE profile
Slides
20170323 March 23, 2017 Double Scalar Production at LHC and Beyond Ian Lewis, University of Delaware Zhen The simplest extension of the Standard Model is to add a gauge singlet scalar: the singlet extended Standard Model.  Although simple, this model is quite well-motivated and has an interesting phenomenology.  Of particular interest is that this model can provide a mechanism for the strong first order phase transition necessary for electroweak baryogenesis. In this... More » InSPIRE profile
20170330 March 30, 2017 Conformal QED3 and the ε expansion Emmanuel Stamou, University of Chicago Pilar The theory of Quantum Electrodynamics in three dimensions (QED3) has received considerable attention due to its applications in condensed matter physics and due to its similarities with stongly coupled QCD-like theories in four dimensions. QED3 is strongly coupled at energies close to the gauge coupling that in this case is dimensionful. Whereas for a large... More » inSPIRE profile
20170406 April 6, 2017 Effective theories for point sources Cliff Burgess, McMaster/PI Paddy Nature comes to us with many hierarchies of scale, and science progresses because we do not need to understand them all at once. Effective theories exploit this fact to isolate what is important at any scale. This talk summarizes how effective theories work for applications to the ordinary and relativistic quantum mechanics of a particle... More » InSPIRE profile
Slides
20170411 April 11, 2017 CERN ν-Physics Summary Seyda Ipek, Fermilab Local Inspires Profile
20170413 April 13, 2017 Hadron resonances in coupled-channel scattering from lattice QCD Jozef Dudek, College of William and Mary Ciaran InSPIRE profile
Slides
20170420 April 20, 2017 The Vev Flip-Flop: Dark Matter Decay between Weak Scale Phase Transitions Michael Baker, JGU Mainz Stefan InSPIRE profile
20170427 April 27, 2017 Lepton Universality Violation in B decays Ben Grinstein, UC San Diego Ciaran InSPIRE profile
20170502 May 2, 2017 A New Era of Seesaw Phenomenology for a New Era of Colliders Richard Ruiz, IPPP, Durham; (NB: Tuesday, WH7XO) Pilar inSPIRE profile
20170504 May 4, 2017 Transplanckian Cosmic Strings Patrick Draper, U. Mass, Amherst Paddy InSPIRE profile
20170511 May 11, 2017 Neutrinoless double beta decay from lattice QCD Amy Nicholson, UC Berkeley Ciaran inSPIRE profile
20170518 May 18, 2017 Collider Probes of Axion-Like Particles Andrea Thamm, JGU Mainz Stefan Inspires Profile
20170522 May 22, 2017 D* Polarization as a probe to distinguish new physics in B → D*τν Uma Sankar, Indian Institute of Technology Bombay Marcela BaBar, Belle and LHCb have all measured the parameters R(D) and R(D*) to be in excess of the Standard Model predictions.  Freytsis et al (arXiv:1506.08896) have obtained the coupling strengths of various New Physics operators which can explain this excess. In this work (arXiv:1606.03164), we look at the angular observables which can distinguish between these different solutions. We find that... More »
20170523 May 23, 2017 LHC constraints on mesons from Stealth Dark Matter Bryan Ostdiek, University of Oregon Kiel Inspires Profile
20170525 May 25, 2017 Instability of Lightest Visible Superpartner Points to Hidden Sector Dark Matter Sebastian Ellis, University of Michigan Kiel Inspires Profile
20170601 June 1, 2017 Minimal Seesaw Model: Testable Leptogenesis & CP violation Jacobo Lopez-Pavon, CERN Pilar inSPIRE profile
20170602 June 2, 2017 Lattice QCD predictions of π and K electromagnetic form factors at large Q2 for Jefferson Lab experiments Christine Davies, University of Glasgow Ciaran Inspires Profile
Slides
20170615 June 15, 2017 Leptogenesis via Weinberg operator Ye-Ling Zhou, Durham University Pilar Inspires Profile
20170620 June 20, 2017 New directions for LHC boosted object searches Jack Collins, University of Maryland Hadronic boosted object discrimination has been reaching experimental maturity in the last few years especially for the discrimination of boosted Standard Model W’s, Z’s, and H’s against QCD jets, and there is now a wide range of searches utilizing these techniques with great success. In this talk I will discuss a range of topologies that... More » InSPIRE profile
Slides
20170622 June 22, 2017 The B -> D(*) tau nu anomalies: facts and/or fictions Zoltan Ligeti, LBNL InSPIRE profile
20170706 July 6, 2017 Solar neutrinos as a probe of Neutrino-Dark Matter interactions Francesco Capozzi, Ohio State Pilar InSPIRE profile
20170711 July 11, 2017 Axion-photon transition (radiation) caused by dielectric interfaces in a magnetic field: QFT approach Ara Ioannisyan, Yerevan Physics Institute, Armenia Axion-photon transition/conversion at dielectric interfaces, immersed in a near-homogeneous magnetic field, is the basis for the dielectric haloscope method to search for axion dark matter. In analogy to transition radiation, this process is possible because the photon wave function is modified by the dielectric layers (“Garibian wave function”) and is no longer an eigenstate of... More » InSPIRE profile
20170712 July 12, 2017 Impact of the magnetic field in EoS, the structure and velocities of the Quark Stars Aurora Perez Martinez, Havana, ICIMAF Marcela We analyze the impact of anisotropic EoS, due to the presence of a magnetic field, in the structure equations of  magnetized quark stars. We assume a cylindrical metric and an anisotropic energy momentum tensor for the source. We found that there is a maximum magnetic field that a quark star can sustain, closely related to... More » Inspires
20170713 July 13, 2017 Lepton flavor universality violation in rare B decays Wolfgang Altmannshofer, Cincinnati U. Ciaran Inspires Profile
20170720 July 20, 2017 New opportunities for old observables at LHC Marc Riembau, DESY Interpreting LHC data requires a few assumptions, even from an Effective Field Theory approach. I will put a question mark on a few on them and study their effects: considering triple Higgs coupling in single Higgs observables gives a complementarity between single and double Higgs; adding anomalous fermion-vector boson couplings in diboson data ends up... More » InSPIRE profile
20170727 July 27, 2017 Toward partial compositeness on the lattice: Lattice results from a candidate SU(4) gauge theory William Jay, Colorado Uni. Ciaran In this seminar, I’ll discuss recent results from lattice simulation of a candidate model of physics beyond the Standard Model. In systems of interest, the Higgs arises as a Goldstone boson of a new strongly coupled sector in the UV, while the top quark obtains its large mass through the mechanism of partial compositeness. This... More » Inspires Profile
Slides
20170810 Aug. 10, 2017 Re-examining Lepton Flavor Violation in the Littlest Higgs Model with T-Parity Roberto Vega-Morales, University of Granada Kiel Inspires Profile
20170817 Aug. 17, 2017 New physics searches with the TeV neutrinos Carlos A Arguelles Delgado, MIT Pilar Inspires Profile
Slides
20170831 Aug. 31, 2017 Flavoured Dark Matter in Dark Minimal Flavour Violation Simon Kast, KIT Roni We study simplified models of flavoured dark matter in the framework of Dark Minimal Flavour Violation. In this setup the coupling of the dark matter flavour triplet to SM quark triplets constitutes the only new source of flavour and CP violation. The parameter space of the model is restricted by LHC searches with missing energy... More » Inspires Profile
20170907 Sept. 7, 2017 Light Composite Scalars from Lattice Gauge Theory Beyond QCD Ethan Neil, Colorado Uni. Ciaran Inspires Profile
Slides
20170914 Sept. 14, 2017 Electric dipole moment using lattice QCD with the gradient flow Andrea Shindler, Michigan State U. Ciaran Inspires Profile
20170921 Sept. 21, 2017 Baryogenesis from Oscillations of Charmed or Beautiful Baryons Ann Nelson, Washington U., Seattle Paddy Inspires
20170928 Sept. 28, 2017 Light Z' coupled to "poorly" conserved currents Maxim Pospelov, Perimeter Institute Ciaran Inspires Profile
20171012 Oct. 12, 2017 Continuum Top Partners Sal Lombardo, Cornell The LHC has put the naturalness paradigm under pressure since one generally expects new colored resonances at the TeV scale to address the hierarchy problem. There exists another possibility, however. New dynamics responsible for furnishing a pseudo-goldstone composite Higgs may have a gapped continuum of colored excitations, in which case the top partners and vector... More » inSPIRE profile
20171017 Oct. 17, 2017 BSM physics searches in the IceCube neutrino telescope Jordi Salvado, Barcelona Stefan inSPIRE profile
20171019 Oct. 19, 2017 The hadronic light-by-light contribution to the muon anomalous magnetic moment from lattice QCD Thomas Blum, Connecticut U. Ciaran Inspires
Slides
20171020 Oct. 20, 2017 Special JC: Lattice quantum gravity and asymptotic safety Jack Laiho, Syracuse U. Ciaran Inspires
Slides
20171026 Oct. 26, 2017 Modern Machine Learning with Jet Images for High Energy Physics Ben Nachman, Berkeley InSPIRE profile
20171030 Oct. 30, 2017 New Physics with Neutrino Physics Pedro Machado, Fermilab inSPIRE profile
20171102 Nov. 2, 2017 Voronoi Tessellations and Machine Learning in Phase Space Jamie Gainer, Hawaii Kiel InSPIRE profile
20171109 Nov. 9, 2017 Singularities: Long time behavior of their Quantum Noise and holographic Complexity Eliezer Rabinovici, Hebrew University Various properties of some space like singularities in string theory will be discussed in the AdS/CFT holographic framework. Attempts to apply the diagnostic tools such as the study of  long time correlations and complexity, to these singularities, will be described. InSPIRE profile
20171116 Nov. 16, 2017 Quantum Monte Carlo predictions for electron- and neutrino-nucleus scattering Alessandro Lovato, Argonne Ciaran Inspires
20171123 Nov. 23, 2017 Happy Thanksgiving
20171128 Nov. 28, 2017 The half-life of a free neutron from Lattice QCD Jason Chang, LBNL Ciaran The axial coupling of the nucleon, $g_A$, is a fundamental property of neutrons and protons. The long-range nuclear force between nucleons and the $\beta$-decay rate of a free neutron both depend on $g_A^2$. This coupling therefore underpins all of low-energy nuclear physics, controlling, for example, the primordial composition of the universe. While the value of... More » Inspires
20171130 Nov. 30, 2017 Deep Learning Seminar
20171205 Dec. 5, 2017 Respect the ELDER Dark Matter & Go Beyond the Direct-Detection Limit with Quilonovae and Neutron Star Mergers Yu-Dai Tsai, Cornell Kiel We present a novel dark matter (DM) candidate, Elastically Decoupling Relic (ELDER), in which the DM current-day abundance is dominantly determined via the elastic decoupling between standard model particles and DM, rather than a usual DM freeze-out. ELDER has a distinctive thermal history and new phenomenological implications in comparison to the CDM/WIMP scenarios. It provides... More » InSPIRE profile
20171212 Dec. 12, 2017 Report on CERN’s Physics Beyond Colliders Annual Workshop Chris Quigg, Fermilab Stefan
20171214 Dec. 14, 2017 Constraining extended Higgs sectors at the LHC and beyond Tania Robens, MSU inSPIRE profile
20180111 Jan. 11, 2018 A new way to determine alpha_s using the QCD gradient flow Tobias Neumann, Fermilab & IIT Ciaran
20180118 Jan. 18, 2018 Searching for beauty-fully bound tetraquarks using lattice Non-relativistic QCD Ciaran Hughes, Fermilab Ciaran Slides
20180125 Jan. 25, 2018 Loop induced inflationary non-Gaussianites that give rise to enhanced galaxy bias at small wave-vectors Mark Wise, Caltech Paddy/Stefan
20180201 Feb. 1, 2018 Three ways to weigh a quark Andrew Lytle, University of Glasgow Ciaran Recent years have seen order of magnitude improvement in knowledge of quark mass parameters — these advances have been due largely to theoretical and computational advances in lattice QCD simulations. Present day calculations are able to obtain percent-level uncertainties; reducing these even further will be important for precision Higgs studies and BSM searches. I will... More » Slides
20180208 Feb. 8, 2018 Displaced Vertices from Folded Supersymmetry Gabriela Lima Lichtenstein, Sao Paulo Ciaran Inspires
Slides
20180215 Feb. 15, 2018 (Rel)-axions and SM hierarchies Diego Redigolo, Weizmann Kiel I will discuss two scenarios which connects the strong CP problem to other hierarchies of the Standard Models. In the “axiflavon”, solving the flavor problem with a global abelian flavor symmetry naturally leads to an axion that solves the strong CP problem and constitutes a viable Dark Matter candidate. In the less tuned window for Dark Matter... More »
20180222 Feb. 22, 2018 Effective theory approach to neutrinoless double beta decay Vincenzo Cirigliano, Los Alamos Pedro Inspires
Slides
20180301 March 1, 2018 Quark Masses Andreas Kronfeld, Fermilab Ciaran Slides
20180306 March 6, 2018 Heavy quarks flavored scalar dark matter with a vector-like fermion portal Peiwen Wu, KIAS Kiel The absence of confirmed signal in dark matter (DM) direct detection (DD) may suggest weak interaction strengths between DM and the abundant constituents inside nucleon, i.e. gluons and valence light quarks. In this work we consider a real scalar dark matter $S$ interacting only with $SU(2)_L$ singlet Up-type quarks $U_i=u_R,c_R,t_R$ via a vector-like fermion $\psi$.... More »
20180308 March 8, 2018 Anderson localisation in theory space Dave Sutherland, UCSB Kiel
20180315 March 15, 2018 Quantum Information and Quantum Gravity Ning Bao, UC Berkeley Kiel
20180322 March 22, 2018 New Developments in Axion Cosmology Josh Eby, Weizmann Ciaran Slides
20180329 March 29, 2018 Astrophysical signals of axion dark matter Ben Safdi, Michigan Kiel
20180403 April 3, 2018 The quest for dark sectors Claudia Frugiuele, Weizmann Roni Dark sectors are ubiquitous in physics beyond the Standard Model (SM), and may play a role  in explaining many of the long-standing problems of the SM such as the existence of dark matter or the electroweak hierarchy problem.  By definition, dark sectors are not charged under any of the known forces. Discovering their possible existence... More »
20180412 April 12, 2018 The road from QCD to nuclear double-beta decays Zohreh Davoudi, University of Maryland Ciaran Neutrinoless double-beta decay, as a lepton-number violating process, has been the focus of numerous experimental and theoretical investigations in recent years. While it proves that neutrinos are Majorana particles once observed, the underlying new physics responsible for this process can only be constrained if the theoretical predictions of the rate are substantially refined. This talk... More » Inspires
Slides
20180419 April 19, 2018 Electromagnetic Interactions of Neutrinos Baha Balantekin, Univ. of Wisconsin, Madison Stefan
20180501 May 1, 2018 Soft photons, gravitons, and their quantum information content Dan Carney, Maryland Kiel When a particle is accelerated, as in a scattering event, it will radiate gravitons and, if electrically charged, photons. The infrared tail of the spectrum of this radiation has a divergence: an arbitrarily small amount of total energy is divided into an arbitrarily large number of radiated bosons. Each of these in turn carries a... More »
20180510 May 10, 2018 New insights into the quark and gluon structure of hadrons and nuclei from lattice QCD Phiala Shanahan, William & Mary Ciaran Inspires
20180517 May 17, 2018 Towards double differential Higgs production at N3LO Falko Dulat, SLAC With the discovery of the Higgs boson, the LHC has entered an era of precision Higgs physics. The precision determination of the properties of the Higgs boson provides an excellent window into potential new physics. High precision predictions for Higgs boson observables are therefore essential for the future LHC Higgs physics program. This requires highly... More »
20180531 May 31, 2018 Neutrino trident production at near detectors Matheus Hostert, IPPP Durham Jessica Neutrino trident scattering is the production of a charged lepton pair in the coulomb field of a nucleus. It is a rare but observable process expected to occur at near detectors of neutrino oscillation experiments. In this talk, I will revisit the calculation of the trident scattering rate, addressing certain inconsistencies in the literature and presenting revised... More » Inspires
20180614 June 14, 2018 EW Baryogenesis through varying Yukawas in Composite Higgs models Sebastian Bruggisser, DESY Stefan Varying Yukawas open new possibilities for electroweak baryogenesis. In this talk I will start by introducing varying Yukawas as a source of CP-violation and explain how baryogenesis can be successful in this framework. I will then present a realization of this paradigm in Composite Higgs models with partial compositeness. Composite Higgs models are, apart from... More »
20180621 June 21, 2018 Quantum information in quantum gravity: localization, transfer, and black hole evolution Steven Giddings, UCSB Kiel
20180628 June 28, 2018 Characterizing nonhermiticity of calorimetric neutrino detectors Shirley Li, SLAC Pedro Inspires
Slides
20180713 July 13, 2018 Automated calculation of two-loop soft functions in SCET Rudi Rahn, Bern University Claudius Perturbative calculations for many collider observables suffer from large logarithmic corrections associated with soft emissions or radiation collinear to beam or jet directions. Resummation using SCET techniques is based on factorisation theorems, and requires the calculation of jet, soft and beam functions to some perturbative accuracy. This task has up to now mainly been achieved... More » InSpire profile
20180719 July 19, 2018 Black Holes and Massive Gravitons (postponed to later date!) Rachel Rosen, Columbia Dan Hooper
20180809 Aug. 9, 2018 Searching Beyond the Standard Model with Light and Gravitational Waves Masha Baryakhtar, Perimeter Institute Dan Hooper
20180830 Aug. 30, 2018 The Leptonic CP Phases: Dirac and Majorana Shaofeng Ge, Kavli IPMU Stephen Parke
20180911 Sept. 11, 2018 Self-Organized Higgs Criticality Jay Hubisz, Syracuse University Roni Harnik
20180920 Sept. 20, 2018 Subleading Colored Parton Showers Joshua Isaacson, Fermilab
20180927 Sept. 27, 2018 Detecting Dark Blobs Dorota Grabowska, Berkeley Kiel Howe Inspires
20181004 Oct. 4, 2018 Light Cone Physics on the Lattice Christopher Monahan, Institute for Nuclear Theory, Seattle
20181011 Oct. 11, 2018 Hiding Blazars with Decaying Alps Edoardo Vitagliano, Max Planck Institute for Physics
20181018 Oct. 18, 2018 ε'/ε beyond the Standard Model Jason Aebischer, Technical University Munich Claudius Krause
20181025 Oct. 25, 2018 Zero-Range Effective Field Theory for Resonant Wino Dark Matter Evan Johnson, Ohio State University
20181101 Nov. 1, 2018 From clockwork to colliders Dipan Sengupta, Michigan State University
20181106 Nov. 6, 2018 Angular distributions in electroweak pion production off nucleons Joanna Sobczyk, IFIC University of Valencia Noemi Rocco
20181108 Nov. 8, 2018 Using machine learning to unlock Gaia’s full potential to determine the dark matter halo Bryan Ostdiek, Oregon University
20181115 Nov. 15, 2018 Muon-proton scattering and the proton radius puzzle Gil Paz, Wayne State University
20181129 Nov. 29, 2018 Light Exotic Higgs Bosons at the LHC Keping Xie, Southern Methodist University Josh Isaacson
20181206 Dec. 6, 2018 Phenomenology of Fermion Production During Inflation Lauren Pearce, University of Illinois
20181213 Dec. 13, 2018 Lattice gauge theory with cold atoms? Yannick Meurice, University of Iowa
20190122 Jan. 22, 2019 Neutrino Oscillation in Particle Physics Ivan Martinez-Soler, Northwestern/Fermilab
20190124 Jan. 24, 2019 Composite BSM physics on the lattice William Jay, Fermilab
20190131 Jan. 31, 2019 Dynamic Dark Matter Production: Finite Temperature Effects in the Early Universe Michael Baker, University of Zurich Jessica Turner
20190205 Feb. 5, 2019 Multiparticle States in Lattice QCD and Prospects for Neutrino Physics Aaron Meyer, BNL Andreas slides
inSPIRE
20190207 Feb. 7, 2019 Predicting the neutron lifetime from the Standard Model Chia Cheng Chang, iTHEMS - LBNL Andreas slides
inSPIRE
20190212 Feb. 12, 2019 Astrophysical Imaging with Information Field Theory Julia Stadler, Durham University Jessica Turner
20190214 Feb. 14, 2019 Nucleon structure and the proton radius from lattice QCD Jeremy Green, DESY Zeuthen Andreas slides
inSPIRE
20190219 Feb. 19, 2019 Leading Hadronic Contribution to the g − 2 of the Muon: A Give-And-Take Between Theory and Experiment Marina Marinković, Trinity College Dublin Andreas slides
inSPIRE
20190221 Feb. 21, 2019 Dark halos around neutron stars and gravitational waves Ann Nelson, University of Washington Josh Isaacson
20190226 Feb. 26, 2019 QCD for the Intensity Frontier Michael Wagman, MIT Andreas slides
inSPIRE
20190228 Feb. 28, 2019 Calculating with Entanglement: nuclear and particle physics on quantum devices Natalie Klco, University of Washington Josh Isaacson
20190305 March 5, 2019 Chiral Gauge Theories for Dark Sector Construction Kevin Kelly, Fermilab
20190307 March 7, 2019 Towards x-dependent hadron structure for flavor physics Christopher Monahan, University of Washington Andreas slides
inSPIRE
20190312 March 12, 2019 LHC phenomenology of Supersymmetric “Unparticles” Christina Gao, Fermilab
20190314 March 14, 2019 Toward a precise definition of branches in a many-body wavefunction Jess Riedel, Perimeter Institute Pedro Machado
20190319 March 19, 2019 Observable signatures of dark photons from supernovae Gustavo Marques Tavares, University of Maryland Nikita Blinov
20190320 March 20, 2019 Precision Physics for Sky Surveys Mikhail Solon, Caltech Richard Hill
20190321 March 21, 2019 Quantum Memories of de Sitter and Phenomenology Gia Dvali, LMU / NYU
20190328 March 28, 2019 Quantum Monte Carlo calculations of neutrino-nucleus interactions Saori Pastore, Washington University, St. Louis Pedro Machado
20190404 April 4, 2019 Minimal Fundamental Partial Compositeness Anders Thomsen, University of Southern Denmark Jessica Turner
20190411 April 11, 2019 Composite Higgs Models at the LHC and beyond Da Liu, Argonne Jessica Turner
20190418 April 18, 2019 Lepton-Nucleus scattering within many-body approaches Noemi Rocco, Argonne/Fermilab
20190425 April 25, 2019 Neutrinos at the frontier of Cosmology and Particle Physics Yuber Perez Gozalez, Northwestern University/Fermilab
20190502 May 2, 2019 Cosmology with Sub-MeV Thermal Relics Nikita Blinov, Fermilab
20190508 May 8, 2019 Softened Goldstone-symmetry breaking Simone Blasi, Max Planck Institute for Physics Pedro Machado
20190516 May 16, 2019 Top Quark Physics at the Precision Frontier Workshop
20190523 May 23, 2019 Signature of supersymmetry and Lμ-Lτ gauge boson at Belle-II Sourov Roy, Indian Association for the Cultivation of Science Bogdan Dobrescu
20190530 May 30, 2019 Disorder at the LHC Matt Low, Fermilab
20190606 June 6, 2019 Fun with Top Spin Kaoru Hagiwara, KEK
20190711 July 11, 2019 Sector Showers for Hadron Collisions - Creating Unique Shower Histories Christian Preuss, Monash University
20190725 July 25, 2019 Strong coupling constant and heavy quark masses from lattice QCD Johannes Weber, Michigan State U. Andreas InSPIRE profile
20190801 Aug. 1, 2019 Coherent Showers In Resonance Decays Using VINCIA Helen Brooks, Monash University Jessica Turner
20190808 Aug. 8, 2019 New-physics interpretation of b->c tau nu data and a novel solution to the little hierarchy problem Ulrich Nierste, Karlsruhe Inst. of Technology Josh Isaacson
20190815 Aug. 15, 2019 Automated label flow using Prony's method for lattice spectroscopy Kimmy Cushman, Yale Josh Isaacson
20190822 Aug. 22, 2019 Sterile Neutrinos with Altered Dispersion Relations as an Explanation for the MiniBooNE, LSND, Gallium and Reactor Anomalies Heinrich Paes, TU Dortmund Pedro Machado slides
20190829 Aug. 29, 2019 New detection prospects for primordial black hole dark matter Nicholas Orlofsky, University of Wisconsin-Madison Christina Gao
20190905 Sept. 5, 2019 Neutrino Oscillation Theory Peter Denton, BNL Stephen Parke
20190912 Sept. 12, 2019 The electroweak effective field theory from on-shell amplitudes Gauthier Durieux, Technion Roni Harnik
20190919 Sept. 19, 2019 B-physics anomalies Sokratis Trifinopoulos, Zurich University Pedro Machado
20190926 Sept. 26, 2019 Heavy Dynamical Axions Rachel Houtz, Universidad Autonoma de Madrid Christina Gao Slides
20191001 Oct. 1, 2019 Probing the Higgs Portal with the SBN Program Ahmed Ismail, Oklahoma State University Pedro Machado
20191017 Oct. 17, 2019 Simplified U(1) lattice gauge theory on quantum computers and simulators Randy Lewis, York University Ciaran Hughes
20191022 Oct. 22, 2019 On the symmetries and the spectrum of a TeV-scale composite sector Michele Frigerio, Univ. of Montpellier Pedro Machado
20191024 Oct. 24, 2019 Generating QCD Corrected Multi-Jet Events at Hadron Colliders using Innovative Phase Space Sampling Methods Terrance Figy, Wichita State University Jessica Turner
20191031 Oct. 31, 2019 Exploring new physics in the early Universe with gravitational waves Jonathan Kozaczuk, Univ. of Mass. Amherst Jessica Turner
20191105 Nov. 5, 2019 SU(2) gauge theory on digital quantum computers Jesse Stryker, University of Washington Hank Lamm
20191107 Nov. 7, 2019 Paul Mackenzie at Fermilab Andreas Kronfeld, Fermilab in connection with Lattice QCD at Fermilab: Celebrating the Career of Paul Mackenzie inSPIRE profile
20191114 Nov. 14, 2019 Exploring the dark universe through molecules and nuclei Harikrishnan Ramani, UC Berkeley & LBL, Berkeley Nikita Blinov
20191121 Nov. 21, 2019 Primordial Non-Gaussianity as a probe of (ultra high-energy) gauge theories Soubhik Kumar, University of Maryland Christina Gao
20191205 Dec. 5, 2019 N3LO predictions for the decay of the Higgs boson to bottom quarks Roberto Mondini, University at Buffalo Josh Isaacson
20191212 Dec. 12, 2019 Learning from Dark Monopoles Christopher Verhaaren, University of California-Davis Christina Gao
20191219 Dec. 19, 2019 Quantum Computing for Neutrino-nucleus Scattering with NISQ devices Andy Li, Fermilab Josh Isaacson
20200109 Jan. 9, 2020 Neutron's Dark Secret Bartosz Fornal, University of Utah Pedro Machado
20200116 Jan. 16, 2020 Quantum Computers for Quantum Field Theory Henry Lamm, Fermilab Pedro
20200130 Jan. 30, 2020 Optimal Control for the Quantum Simulation of Nuclear Dynamics Kyle Wendt, LLNL Pedro
20200206 Feb. 6, 2020 CP violating Yukawas - interplay of baryogenesis, EDM and Higgs physics Elina Fuchs, Fermilab/U. Chicago Pedro
20200218 Feb. 18, 2020 Baryogenesis from B mesons Huangyu Xiao, University of Washington Pedro Machado
20200220 Feb. 20, 2020 Hiding multiple portals in plain sight: dark sectors at neutrino and kaon experiments Matheus Hostert, University of Minnesota Christina Gao
20200225 Feb. 25, 2020 Loops and trees in generic EFTs Ying-Ying Li, Fermilab Pedro
20200227 Feb. 27, 2020 New Approaches to Anomaly Detection at the LHC and Beyond David Shih, Rutgers University Pedro Machado
20200305 March 5, 2020 Weaker than weak physics at the intensity frontier Ryan Plestid, U. Kentucky The advent of precision neutrino physics has resulted in detector technology (easily) capable of observing upwards of 10^5 charged current scattering events in the lifetime of an experiment. This naturally motivates a theoretical program targeting sub-G_F physics at the intensity frontier. In this talk I will discuss some examples of how large-scale neutrino detectors can... More » Slides
pubs
20200312 March 12, 2020 Relaxion searches at future colliders Matthias Schlaffer, U Chicago Pedro Machado
20200319 March 19, 2020 Gauge extensions of the SM: Neutrinos, dark matter and the LHC [zoom] Alexis Plascencia, Case Western Reserve University Jessica Turner Slides Slides
20200326 March 26, 2020 On Asymmetry Observables In b → cτν [zoom] Pouya Asadi, MIT Pedro Machado slides
20200402 April 2, 2020 ONLINE ONLY: Looking for New Physics in the low energy experiments Jia Liu, U. Chicago Christina Gao Slides
20200409 April 9, 2020 ONLINE ONLY: Toward analog quantum simulation of lattice gauge theories with trapped ions Zohreh Davoudi, U. Maryland Pedro Machado Slides
20200416 April 16, 2020 ONLINE ONLY: QCD dynamics from hadrons and nuclei to the energy frontier Tim Hobbs, Southern Methodist University Slides
20200423 April 23, 2020 Physics beyond the standard model from Higgs Parity Keisuke Harigaya, Institute for Advanced Study Christina Gao
20200430 April 30, 2020 Axion Production and Detection with Superconducting RF Cavities Ryan Janish, Berkeley Roni Slides
20200507 May 7, 2020 Hadronic Vacuum Polarization in (g-2)μ from Lattice QCD Kalman Szabo, Wuppertal Andreas
20200514 May 14, 2020 The Short-Baseline Neutrino Anomalies Joachim Kopp, U. Mainz and CERN Pedro Machado While over the past two decades a largely consistent picture of neutrino oscillations has emerged, a few unexplained anomalies put a serious dent in this framework. After introducing the LSND, MiniBooNE, and reactor anomalies, we will first discuss attempts to explain the latter two within the Standard Model. In the second part of the talk,... More » video
20200521 May 21, 2020 LIGO/Virgo Black Holes from a First Order QCD Phase Transition Hooman Davoudiasl, BNL Pedro Machado video
20200528 May 28, 2020 Multi-loop Scattering Amplitudes for the HL-LHC, presenting the Caravel Framework Fernando Febres Cordero, Florida State University Pedro Machado slides
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20200604 June 4, 2020 Spin-2 KK Mode Scattering in the Truncated RS1 Dennis Foren, Michigan State U. Joshua Isaacson The Randall-Sundrum model with two branes (RS1)  is a gravitational theory on five-dimensional spacetime. Because its fifth dimension is compactified, the theory manifests as a four-dimensional theory at low energies, where it describes interactions among a Kaluza-Klein spectrum that contains a 4D graviton, massless radion, and infinitely many massive spin-2 states. These massive spin-2 states pose... More » video
20200611 June 11, 2020 Quantum Simulation of Gauge Theories Scott Lawrence, U. of Maryland Pedro video
20200618 June 18, 2020 A testable hidden sector model for Dark Matter and neutrino masses Julia Gehrlein, BNL Christina Gao We consider a minimal extension of the Standard Model with a hidden sector charged under a dark local U(1)’ gauge group, accounting simultaneously for light neutrino masses and the observed Dark Matter relic abundance. The model contains two copies of right-handed neutrinos which give rise to light neutrino-masses via an extended seesaw mechanism. The presence... More » video
20200625 June 25, 2020 No seminar (Neutrino 2020)
20200702 July 2, 2020 No seminar (Neutrino 2020)
20200709 July 9, 2020 A New Probe of the Nature of the B Physics Anomalies Stefan Schacht, Cornell Claudius Krause fermilab-schacht slides
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20200716 July 16, 2020 A Swampland Tour, From Photon Masses to Axion Physics Matthew Reece, Harvard Matt Low slides
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20200723 July 23, 2020 Strong First-Order Electroweak Phase Transitions, Models and Probes Peisi Huang, Univ. of Nebraska-Lincoln Ying-Ying Li video
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20200730 July 30, 2020 Circumventing the sign problem with complex Langevin in lattice field theory Casey Berger, Boston University Will Jay video
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20200813 Aug. 13, 2020 Higgs-confinement phase transitions with fundamental representation matter Aleksey Cherman, University of Minnesota Will Jay
20200820 Aug. 20, 2020 Prospects for the Detection of Solar Neutrinos in DARWIN via Elastic Electron Scattering (Please note time: 10:00am) Shayne Reichard, Zurich U. Pedro video
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20200827 Aug. 27, 2020 Unravelling the richness of dark sector by FASERnu (Please note time: 10:00am) Yasaman Farzan, IPM Pedro Machado FASER\nu is a newly proposed experiment which will take data in run III of the LHC during 2021-2023. It will be located in front of the FASER detector, 480~m away from the ATLAS interaction point in the forward direction. Its main goal is to detect neutrinos of all flavors produced at the interaction point with... More » video
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20200903 Sept. 3, 2020 Ensemble generation for lattice QFT using machine learning Tej Kanwar, MIT Will Jay Monte Carlo sampling is a powerful approach to computing observables in quantum field theories regularized on a discrete spacetime lattice (LQFT), which is necessary for example to study the non-perturbative behavior of QCD in the low-energy regime. The cost of drawing independent samples is a major bottleneck in such studies. I discuss recent work demonstrating... More » video
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20200910 Sept. 10, 2020 Advances in nucleon-nucleon scattering Amy Nicholson, University of North Carolina Will Jay video
20200917 Sept. 17, 2020 x-dependent hadron structure from lattice QCD Raza Sufian, JLab Will video
20200924 Sept. 24, 2020 Sequential Discontinuities of Scattering Amplitudes Hofie Sigridar Hannesdottir, Harvard Nikita Scattering amplitudes are essential ingredients in theoretical predictions for collider experiments. In some cases, symmetries and other constraints can fix amplitudes completely, and hence conventional Feynman diagram computations are circumvented. The traditional cutting rules relate discontinuities across branch cuts of amplitudes to cuts through the corresponding Feynman diagrams. Here we probe the analytic structure further... More » video
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20201001 Oct. 1, 2020 Neutrino oscillations as constraints on Effective Field Theory Zahra Tabrizi, Virginia Tech Pedro video
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20201008 Oct. 8, 2020 Fractional Quantum Hall effect in a relativistic field theory Srimoyee Sen, Iowa State Pedro slides
20201015 Oct. 15, 2020 Cosmological phase transition of composite Higgs confinement and the fifth dimension Majid Ekhterachian, Maryland U. Will video
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20201022 Oct. 22, 2020 Novel (Quantum) Computational Methods for Quantum Field Theories (*Please note the time: 10:30am) Michael Spannowsky, Durham U. Yingying
20201029 Oct. 29, 2020 Collapse of vacuum bubbles in quantum devices Junyu Liu, Caltech Yingying
20201105 Nov. 5, 2020 Precision Neutrino Oscillations: Exploring Possibilities and Important Considerations Rebekah Pestes, Virginia Tech Pedro Machado video
20201112 Nov. 12, 2020 Progress on gluon gravitational form factors on the lattice Daniel Hackett, MIT video
20201119 Nov. 19, 2020 The Hydrogen Mixing Portal as a Novel Mechanism for Colder Baryons in 21 cm Cosmology Seth Koren, University of Chicago Ying-Ying Li video
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20201126 Nov. 26, 2020 Thanksgiving Day
20201203 Dec. 3, 2020 Rethinking the origin of neutrino masses: the role of gravity Lena Funcke, Perimeter Pedro Machado video
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20201210 Dec. 10, 2020 A Holographic Realization of Partially Composite Neutrinos Abhish Dev, University of Maryland Pedro Machado
20201217 Dec. 17, 2020 A Futuristic Look at Neutrino Telescopes: Sources, Decay, Non-Unitarity and Extra Dimensions Ningqiang Song, Queen's University Pedro Machado video
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20201224 Dec. 24, 2020 Christmas Eve
20201231 Dec. 31, 2020 New Year's Eve
20210114 Jan. 14, 2021 Towards quantum simulating non-Abelian lattice gauge theories Indrakshi Raychowdhury, University of Maryland Ying-Ying Li video
20210119 Jan. 19, 2021 Simulating Quantum Field Theories with Quantum Circuits (PLEASE NOTE TIME & DATE: Tuesday at 10:00am) Ananda Roy, Technical University Munich Roni Investigation of strongly interacting quantum field theories (QFTs) remains one of the outstanding challenges of modern physics. Quantum simulation has the potential to be a crucial technique towards solving this problem. In this talk, I will describe analog quantum simulators for strongly interacting QFTs using mesoscopic quantum electronic circuit lattices. The tunable, robust and dispersive... More » video
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20210121 Jan. 21, 2021 Newtonian binding from lattice quantum gravity Judah Unmuth, FNAL We study the propagators of a scalar field coupled to a lattice regularization of gravity in the limit there is no back-reaction from the matter.  We extract the renormalized mass, and binding energy between scalar particles and attempt to recover the known, non-relativistic, tree-level calculation in the infinite-volume, continuum limit  for the scaling of the... More » video
20210128 Jan. 28, 2021 Pushed from the Precipice: Lattice Field Theory for Quantum Computers Hank Lamm, FNAL Roni Harnik Over the past five decades, Euclidean lattice field theory has matured into a broad program capable of making precise QCD predictions. While its success is undeniable, certain problems in real time and at finite density elude it due to sign problems. Early on, Feynman pointed out that many of these problems are naturally solvable on... More » video
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20210211 Feb. 11, 2021 Muon g-2 Experiments as Dark Matter Detectors Ryan Janish, FNAL We propose extending the search for dark matter (DM) by considering muon spin targets.  An ultralight DM background may apply an oscillating torque to muon spins, resulting in novel precession trajectories.  A time-resolved analysis of muon precession data from the upcoming Fermilab and J-PARC g-2 experiments and future frozen spin EDM measurements are sensitive to... More » video
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20210218 Feb. 18, 2021 Discovering the Dark Universe Asher Berlin, New York U. Roni Harnik Although it is known to provide the gravitational scaffolding of our universe, the existence of dark matter is a mystery that cannot be explained by our current understanding of fundamental particle physics. Recent years have seen a growing interest in applying developing technologies to enable qualitatively new ways to look for types of dark matter... More » slides
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20210225 Feb. 25, 2021 Gravitational Waves as a Probe of New Physics: from LIGO to NANOGrav Vedran Brdar, FNAL/Northwestern U. In the first part of the talk I will discuss gravitational wave signature arising from first order phase transition in two different models featuring neutrino mass generation through type-I seesaw mechanism. The expected gravitational wave spectra from these models will be confronted with sensitivities of ground-based detectors such as LIGO as well as several future... More » video
20210304 March 4, 2021 An unambiguous test of positivity at lepton colliders Jiayin Gu, U. Mainz Ying-Ying The diphoton channel at lepton colliders, e+e-  (mu+mu-) ->  gamma gamma, has a remarkable feature that the leading new physics contribution comes only from dimension-eight operators.  This contribution is subject to a set of positivity bounds,  derived from fundamental principles of Quantum Field Theory, such as unitarity, locality, analyticity and Lorentz invariance.  These positivity bounds are thus... More » video
20210311 March 11, 2021 Searching for hidden sectors: new experiments and theory Robert Lasenby, Stanford U. Roni Harnik The problems of dark matter, quantum gravity and the early universe show that physics beyond the Standard Model must be out there, but its nature remains a mystery. In this seminar, I will describe new experimental and theoretical ideas to expand our search for new physics. I’ll talk about how searches for dark matter candidates,... More » slides
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20210318 March 18, 2021 Quantum sensing for dark relics Harikrishnan Ramani, Stanford U. Roni Harnik Direct detection is notoriously hard for a plethora of dark matter models and models of dark relics due to their inability to impart enough energy to the direct detection target. Detecting these dark relics with energy deficit involves tackling the twin challenges of a target that can convert small amounts of dark matter kinetic energy... More » slides
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20210325 March 25, 2021 Higgs boson pair production at NNLO in QCD with finite top quark mass effects Florian Herren, FNAL Higgs boson pair production is the most promising process for testing the scalar potential of the SM beyond the quadratic term. The next-to-leading order QCD corrections for this gluon-fusion process are large and the dependence on the renormalization scheme of the top quark mass are sizeable.   In this seminar I will discuss the current... More » video
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20210401 April 1, 2021 Exciting Prospects for Detecting Late-Time Neutrinos from Core-Collapse Supernovae Shirley Li, FNAL The importance of detecting neutrinos from a Milky Way core-collapse supernova is well known.  An under-studied phase is proto-neutron star cooling.  With the high statistics expected for present and near-future detectors, it should be possible to obtain detailed neutrino signals from before the start of the cooling phase to very late times.  We present the... More » slides
20210408 April 8, 2021 Higgs alignment and the top quark Kenneth Lane, Boston U. There is a surprising connection between the top quark and Higgs alignment in Gildener-Weinberg multi-Higgs-doublet models. Were it not for the top quark and its large mass, the coupling of the 125 GeV Higgs boson H to gauge bosons and fermions would be indistinguishable from those of the Standard Model Higgs. The top quark’s coupling... More » video
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20210415 April 15, 2021 Continuous Renormalization Group on the Lattice Andrea Carosso, University of Colorado The traditional method of performing renormalization group (RG) transformations for spin systems is by spin-blocking, where the block spins are local averages of the original spins, and they live on a lattice with fewer sites than the original lattice. As such, this transformation is inherently discrete. By contrast, over the last decade a new technique known as... More » slides
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20210422 April 22, 2021 B-physics anomalies: a road to new physics? Olcyr Sumensari, Orsay Pedro Even though the LHC searches did not unveil the new physics particles so far, observations made at LHCb and the B-factories point towards lepton flavor universality violation in both tree-level and loop-induced B-meson semileptonic decays. After a review of the status of these anomalies, I will discuss general implications that can be derived by using... More » slides
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20210429 April 29, 2021 Nucleon Mass and Charges with Lattice Quantum Chromodynamics Yin Lin, Fermilab/University of Chicago Will Jay Theoretical understandings of the neutrino-nucleus cross sections are critical for constraining neutrino parameters in future neutrino oscillation experiments such as DUNE and Hyper-K. For neutrino energies at around 1 GeV, uncertainties in the nucleon axial form factor, which parameterizes the weak response of a neutron or proton as a function of the four momentum transfer,... More » slides
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20210506 May 6, 2021 Precision calculation of the $x$-dependence of PDFs from lattice QCD Yong Zhao, ANL Will Jay video
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20210513 May 13, 2021 Hint of SUSY in Flavor Anomalies? Bhupal Dev, Washington U at St. Louis Pedro The recent results from the Fermilab muon g-2 experiment have caused quite a stir in the community. At the same time, there are persisting hints of lepton flavor universality violation in some rare B-meson decays. Taken at face value, if these anomalies are interpreted as of beyond the Standard Model (BSM) origin, it is conceivable... More » video
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20210520 May 20, 2021 Probing the Standard Model with flavor physics: an exclusive determination of $|V_{cb}|$ from the $B\to D^\ast\ell\nu$ semileptonic decay at non-zero recoil Alex Vaquero, Utah U. Will Jay A very rich place to look for phenomena to challenge our current understanding of physics is the flavor sector of the Standard Model (SM). In particular, the $V_{cb}$ matrix element of the CKM matrix is the subject of a long standing tension, depending on whether it is determined using inclusive or exclusive methods. On top... More » slides
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20210527 May 27, 2021 Graded Hilbert spaces and quantum distillation in QFT Mithat Unsal, North Carolina State U. I construct various generalizations of partition function in non-supersymmetric theories, including few fairly close to QCD, that do not undergo a phase transition upon circle compactification. This is similar to what happens in supersymmetric index calculations but there it is guaranteed by supersymmetry, and Bose-Fermi grading of Hilbert space. In manifestly non-supersymmetric theories in QM,... More » slides
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20210603 June 3, 2021 Electroweak symmetry in the early universe Yikun Wang, U. Chicago Behavior of the electroweak symmetry and the Higgs thermal history have intriguing implications for matter antimatter asymmetry creation and early universe physics. In this talk, I will present two beyond the Standard Model scenarios resulted in two different early universe paths of the electroweak symmetry. Electroweak phase transition from an electroweak symmetric phase to the... More » video
20210610 June 10, 2021 A lattice QCD calculation of the hadronic light-by-light contribution to the magnetic moment of the muon Harvey Meyer, University of Mainz Will Jay I present a recent calculation of the hadronic light-by-light scattering contribution to the muon g−2 from the up, down, and strange-quark sector directly using lattice QCD. I first describe the methodology based on coordinate-space methods and a pilot calculation at the SU(3)-flavour symmetric point with a pseudoscalar mass of about 420 MeV. The final result... More » slides
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20210617 June 17, 2021 On-shell amplitudes for Dark Matter Camila Machado, DESY Pedro On-shell methods have been shown to be a powerful tool to compute higher-point and loop amplitudes. However, most of the time we hear about the applications for renormalizable theories. In this talk, I will give an introduction to spinors and to (massless/massive) amplitudes and show that we can indeed apply these methods for general effective field... More » slides
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20210624 June 24, 2021 NLO mixed QCD-electroweak corrections to Higgs boson production at the LHC Marco Bonetti, Aachen U. The study of the Higgs boson properties is one of the main tasks of contemporary high-energy physics. At the LHC, gluon fusion is the main production channel of Higgs bosons, and mixed QCD-electroweak corrections represent one of the main sources of theoretical uncertainty for such process, known until few years ago only at leading order... More » slides
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20210701 July 1, 2021 Probing New Physics with Double Beta Decays Lukas Graf, MPIK-Heidelberg Pedro The observation of neutrinoless double beta decay would have far-reaching consequences for particle physics. Most prominently, it would give a hint on the origin of neutrino masses and on the scale at which they are generated. We will discuss the effective description of non-standard mechanisms triggering neutrinoless double beta decay and the implications of their... More » slides
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20210708 July 8, 2021 NLO di-boson production by gluon fusion, in the high-energy limit Josh Davies, Sussex U. In this talk I will discuss computations of NLO virtual corrections to four-point gluon-fusion processes; in particular the production of HH, ZH and ZZ. Recently these processes have been computed numerically, but they are not known analytically. I will discuss how one can perform an expansion of these amplitudes in the high-energy limit, and improve the resulting series through the... More » slides
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20210715 July 15, 2021 Maximal Entanglement in a Quantum Computer (*PLEASE NOTE TIME: 1:30PM*) Alba Cervera Lierta, University of Toronto Hank Nature is such that Maximal Entangled states exist”. This conjecture is based on the fact that we not only observe maximal entanglement in several physical processes but also we are able to verify that local realism can not describe quantum mechanics. We go a step further and suggest the possibility that maximal entanglement plays a... More » slides
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20210722 July 22, 2021 Effective Field Theory and the Geometry of Electroweak Symmetry Breaking Nathaniel Craig, UC-Santa Barbara There are two canonical approaches to treating the Standard Model as an effective field theory: the Standard Model EFT (SMEFT), respecting the full electroweak gauge symmetry, and the Higgs EFT (HEFT), respecting only electromagnetism. Of these, SMEFT has become the predominant framework for interpreting LHC Higgs data and exploring the systematics of effective field theory.... More » slides
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20210729 July 29, 2021 The Conformal Frontier David Poland, Yale From critical phenomena to quantum gravity, conformal field theories describe the universal scale-invariant structures that lie at the heart of theoretical physics. The conformal bootstrap is the powerful idea, dating back to the 70’s, that one can use fundamental consistency conditions to constrain, solve, and map out the space of conformal field theories. In this... More » video
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20210805 Aug. 5, 2021 Gravitating vortices in an AdS$_3$ and Minkowski background Ariel Edery, Bishop's University Vortices are non-singular field configurations in $2+1$ dimensions that have finite energy. They have usually been studied in a fixed Minkowski spacetime i.e. without gravity. In this work, we embed vortices in gravity. We find numerically static vortex solutions where the scalar and gauge fields have a non-singular profile under Einstein gravity in an AdS$_3$ background.... More » video
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20210819 Aug. 19, 2021 Discovering the new physics of (g−2)μ at colliders Rodolfo Capdevilla, Perimeter The Fermilab Muon g−2 collaboration has recently released its first measurement of (g−2)μ. This result is consistent with previous Brookhaven measurements and together they yield a statistically significant 4.2σ discrepancy with the Standard Model prediction. BSM solutions to (g−2)μ feature light weakly coupled neutral particles (Singlet Scenarios) or heavy strongly coupled charged particles (Electroweak Scenarios). In recent investigations,... More » video
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20210826 Aug. 26, 2021 Toward first-principles calculation of the shear viscosity - classical and quantum approaches Yukari Yamauchi, Maryland U. Hydrodynamics successfully describes low-energy modes of a wide class of theories including QCD in the strongly-coupled regime. Some of the low energy constants in the hydrodynamic description of QCD, such as shear viscosity, are difficult to obtain from first principles on a classical computer due to the sign problem. One long-standing way to address sign... More » video
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20210902 Sept. 2, 2021 Entanglement in collective neutrino oscillations: quantum simulations and tensor networks Alessandro Roggero, University of Trento In extreme astrophysical phenomena like supernova explosions, the large neutrino density can lead to collective flavor oscillations driven by neutrino-neutrino interactions. These phenomena can greatly modify flavor transport in these environments with potentially important consequences for both the explosion mechanism and nucleosynthesis in the ejected material. Even simple models of neutrino-neutrino interactions lead to a... More »
20210909 Sept. 9, 2021 Gravitational Waves from Cosmological First Order Phase Transitions: Recent Theoretical and Experimental Developments. Huaike Guo, Oklahoma U.
20210923 Sept. 23, 2021 Bubble-Of-Nothing Decay of the de Sitter Universe Benjamin Lillard, UIUC If our apparently four-dimensional spacetime is endowed with compact extra dimensions, our universe may not be entirely stable. It can decay, by the spontaneous nucleation of a “bubble of nothing”: a gravitational instanton that induces a catastrophic annihilation of spacetime. In this talk we discuss the connection between the bubble of nothing and an analogous Coleman-De... More »
20210930 Sept. 30, 2021 Matter-Antimatter Asymmetry in Neutral Kaons Zachary Polonsky, U. Cincinnati The parameter $\epsilon_K$ is an important measure of the imbalance between matter and antimatter in the neutral kaon ($K^0$ and $\bar{K}^0$) system. In particular, $\epsilon_K$ provides a sensitive probe of new physics and plays a critical role in the global fit of the Cabibbo-Kobayashi-Maskawa matrix. As one of the first discovered sources of $CP$ violation,... More »
20211007 Oct. 7, 2021 Dark Photon bounds in the dark EFT Enrico Bertuzzo, University of São Paulo Pedro Dark photons are among the simplest extensions of the Standard Model (SM): a renormalizable kinetic mixing with the ordinary photons generates a coupling between the dark photon and the SM electromagnetic current. Such coupling can be used to probe the parameter space of the model, resulting in severe bounds. In this talk, I will discuss... More »
20211014 Oct. 14, 2021 Neutrino interactions from the cosmos Ivan Esteban, Ohio State U. Do neutrinos have sizable self interactions? They might. As laboratory constraints are weak, strong effects can change our picture of astrophysical and cosmological environments. In this talk, I will explore the rich physics introduced by neutrino self-interactions throughout the Universe. I will discuss how a multidisciplinary approach, ranging from precision cosmology to neutrino telescopes, is... More »
20211021 Oct. 21, 2021 New backgrounds and new ideas for sub-GeV dark matter direct detection Peizhi Du, Stony Brook Probing sub-GeV dark matter requires designing low threshold detectors and understanding backgrounds. In this talk I will address these two issues. First, we point out several unexplored low-energy backgrounds in sub-GeV dark matter searches, which arise from high-energy particles of cosmic or radioactive origin that interact with detector materials. In this talk, I will focus... More »
20211028 Oct. 28, 2021 Reinterpretation of the Weak Mixing Angle Measurement from Atomic Parity Violation Francesca Dordei, INFN Cagliari In this talk, I will present the first measurement of the neutron skin of cesium and iodine using electroweak probes, namely coherent elastic neutrino-nucleus scattering and atomic parity violation. This measurement, differently from hadronic probes, is model-independent and suggests a preference for nuclear models which predict large neutron skin values. Moreover, it permits to perform... More »
20211104 Nov. 4, 2021 Flavor-specific Neutrino self-interaction in Cosmology Subhajit Ghosh, University of Notre Dame Neutrino self-interaction has been proposed as a solution to the Hubble tension, a discrepancy between the measured values of the Hubble constant from CMB and low-redshift data. However, flavor-universal neutrino self-interaction is highly constrained by BBN and laboratory experiments such as K-meson and tau decay, double-neutrino beta decay etc. In this talk, I will discuss... More »
20211111 Nov. 11, 2021 The NASDUCK collaboration: using quantum magnetometers to look for ultralight dark matter Itay Bloch, Tel Aviv U. When DM bosons have an ultra-light mass, they can act as a classical, coherent field. In many cases, and specifically in some ALP models, this field has magnetic properties, and it can therefore be measured by quantum magnetometers. The Noble and Alkali Spin Detectors for Ultralight Coherent darK matter (NASDUCK) collaboration, was formed last year... More »
20211118 Nov. 18, 2021 Axion Archaeology -- Echos from Ancient Supernova Remnants Chen Sun, Tel Aviv U. Stimulated decays of axion dark matter, triggered by a source in the sky, could produce a photon flux along the continuation of the line of sight, pointing backward to the source. The strength of this so-called axion “echo” signal depends on the entire history of the source and could still be strong from sources that... More »
20211125 Nov. 25, 2021 No seminar: Thanksgiving
20211202 Dec. 2, 2021 Lepton flavor violation and other indirect searches for New Physics Alexey Petrov, Michigan U./Wayne State