Muon momentum measurement in ICARUS-T600 LAr-TPC via multiple scattering in few-GeV range

摘要

The measurement of muon momentum by Multiple Coulomb Scattering is a crucial\udingredient to the reconstruction of νμ CC events in the ICARUS-T600 liquid argon TPC in\udabsence of magnetic field, as in the search for sterile neutrinos at Fermilab where ICARUS will\udbe exposed to ~1 GeV Booster neutrino beam. A sample of ~1000 stopping muons produced by\udcharged current interactions of CNGS νμ in the surrounding rock at the INFN Gran Sasso\udunderground Laboratory provides an ideal benchmark in the few-GeV range since their\udmomentum can be directly and independently obtained by the calorimetric measurement.\udStopping muon momentum in the 0.5- 4.5 GeV/c range has been reconstructed via Multiple\udCoulomb Scattering with resolution ranging from 10 to 25 % depending on muon energy, track\udlength and uniformity of the electric field in the drift volume.