Speaker: Giorgio Giacomelli (Universita' di Bologna and INFN)
Title: Final results of the MACRO experiment at Gran Sasso
Abstract:
The MACRO experiment used a large multipurpose underground detector equipped
with three independent subdetectors: liquid scintillation counters, limited
streamer tubes and nuclear track detectors. Results on different physics and
astrophysics topics are presented and discussed.
Atmospheric neutrinos: the data concern different event topologies with
average neutrino energies of 4 and 50 GeV. Use was made of Multiple Coulomb
Scattering to estimate the neutrino energies of events of the higher energy
sample. The angular distributions, the absolute fluxes and the L/E
distribution favour numu-->nutau oscillations with maximal mixing and
$\Delta m2=0.0025 eV2$. The search for astrophysical sources of high
energy muon neutrinos and the indirect search for WIMPs yielded interesting
upper limits.
Search for GUT supermassive magnetic monopoles in the penetrating cosmic
radiation: no candidate was found; the 90% CL upper limits are at the level
of 1.5 10^-16 cm^-2 sr^-1 s^-1 for 0.0001 with energy.
Send comments to:
bdob@fnal.gov
