Theory Division

The η meson is almost unique in the particle universe since it is a Goldstone boson and the dynamics of its decay are strongly constrained.  Because the eta has no charge, decays that violate conservation laws can occur without interfering with a corresponding current. The integrated eta meson samples collected in earlier experiments have been less than... More »

Type Ia Supernovae continue to prove to be an incredibly useful tool to measure cosmic distances.  They are a critical pillar in the measurement of the local value of the Hubble constant, which has now been shown to be in over 3-sigma tension with the inferred value of the Hubble constant from measurements of the... More »

Daniel Bowring, Dielectric Tuning of Cavities Bob Zwaska, Sinuous Target Angela Fava, Liquid Argon Charge Amplification Device Javier Tiffenberg, Low Energy Threshold Particle Detector