CERN Accelerating science

Preprint
Report number	hep-ex/0311040
Title	Measurement of the muon decay spectrum with the ICARUS liquid Argon TPC
Author(s)	Amoruso, S ; Antonello, M ; Aprili, P ; Arneodo, F ; Badertscher, A ; Baiboussinov, B ; Baldo-Ceolin, Massimilla ; Battistoni, G ; Bekman, B ; Benetti, P ; Bischofberger, M ; Boriodi-Tigliole, A ; Brunetti, R ; Bruzzese, R ; Bueno, A G ; Calligarich, E ; Campanelli, M ; Carbonara, F ; Carpanese, C ; Cavalli, D ; Cavanna, F ; Cennini, P ; Centro, Sandro ; Cesana, A ; Chen, C ; Chen, D ; Chen, D B ; Chen, Y ; Cid, R ; Cieslik, K ; Cline, D ; Cocco, A G ; Dai, Z ; De Vecchi, C ; Di Cicco, A ; Dolfini, R ; Ereditato, A ; Felcini, M ; Ferella, A ; Ferrari, A ; Ferri, A F ; Fiorillo, G ; Galli, S ; Garcia-Gamez, D ; Ge, Y ; Gibin, D ; Gigli-Berzolari, A ; Gil-Botella, I ; Graczyk, K ; Grandi, L ; Guglielmi, A M ; He, K ; Holeczek, J ; Huang, X ; Juszczak, C ; Kielczewska, D ; Kisiel, J ; Kozlovskii, T ; Laffranchi, M ; Lagoda, J ; Li, Z ; Lu, F ; Ma, J ; Mangano, G ; Mannocchi, G ; Markiewicz, M ; Martinez de la Ossa, A ; Matthey, C ; Mauri, F ; Melgarejo, A ; Menegolli, A ; Meng, G ; Messina, M ; Montanari, C ; Muraro, S ; Navas-Concha, S ; Nowak, J ; Osuna, C ; Otwinowski, S ; Ouyang, Q ; Palamara, O ; Pascoli, D ; Periale, L ; Piano Mortari, G ; Piazzoli, A ; Picchi, P ; Pietropaolo, F ; Polchlopek, W ; Prata, M J ; Rancati, T ; Rappoldi, A ; Raselli, G L ; Rico, J ; Rondio, Ewa ; Rossella, M ; Rubbia, André ; Rubbia, Carlo ; Sala, P ; Santorelli, R ; Scannicchio, D A ; Segreto, E ; Seo, Y ; Alsoat, C ; Sergiampietri, F ; Sobczyk, J ; Spinelli, N ; Stepaniak, J ; Sulej, R ; Szarska, M ; Szeptycka, M ; Terrani, M ; Velotta, R ; Ventura, Sandro ; Vignoli, C ; Wang, H ; Wang, X ; Woo, J ; Xu, G ; Xu, Z ; Zalewska-Bak, A ; Zhang, C ; Zhang, Q ; Zhen, S ; Zipper, W
Publication	2003
Imprint	19 Nov 2003
Number of pages	14
Subject category	Particle Physics - Experiment
Abstract	Examples are given which prove the ICARUS detector quality through relevant physics measurements. We study the muon decay energy spectrum from a sample of stopping muon events acquired during the test run of the ICARUS T600 detector. This detector allows the spatial reconstruction of the events with fine granularity, hence, the precise measurement of the range and dE/dx of the muon with high sampling rate. This information is used to compute the calibration factors needed for the full calorimetric reconstruction of the events. The Michel rho parameter is then measured by comparison of the experimental and Monte Carlo simulated muon decay spectra, obtaining rho = 0.72 +/- 0.06(stat.) +/- 0.08(syst.). The energy resolution for electrons below  50 MeV is finally extracted from the simulated sample, obtaining (Emeas-Emc)/Emc = 11%/sqrt(E[MeV]) + 2%.
Other source	Inspire
Submitted by	javier.rico@cern.ch