A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate (PbWO4) of the electromagnetic calorimeter. The measurement spans a momentum range from 5 GeV/c to 1 TeV/c. The results are consistent with the expectations over the entire range. The calorimeter energy scale, set with 120 GeV/c electrons, is validated down to the sub-GeV region using energy deposits, of order 100 MeV, associated with low-momentum muons. The muon critical energy in PbWO4 is measured to be 160+5−6±8 GeV, in agreement with expectations. This is the first experimental determination of muon critical energy.

Chatrchyan, S., Khachatryan, V., Sirunyan, A., Adam, W., Arnold, B., Bergauer, H., et al. (2010). Measurement of the muon stopping power in lead tungstate. JOURNAL OF INSTRUMENTATION, 5(3), P03007-P03007 [10.1088/1748-0221/5/03/P03007].

Measurement of the muon stopping power in lead tungstate

BENAGLIA, ANDREA DAVIDE;DE GUIO, FEDERICO;GHEZZI, ALESSIO;Govoni, P.;MALBERTI, MARTINA;MARTELLI, ARABELLA;Moroni, L.;PAGANONI, MARCO;PULLIA, ANTONINO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A.;Dinardo, M. E.;
2010

Abstract

A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate (PbWO4) of the electromagnetic calorimeter. The measurement spans a momentum range from 5 GeV/c to 1 TeV/c. The results are consistent with the expectations over the entire range. The calorimeter energy scale, set with 120 GeV/c electrons, is validated down to the sub-GeV region using energy deposits, of order 100 MeV, associated with low-momentum muons. The muon critical energy in PbWO4 is measured to be 160+5−6±8 GeV, in agreement with expectations. This is the first experimental determination of muon critical energy.
Articolo in rivista - Articolo scientifico
Stopping power, muons
English
2010
5
3
P03007
P03007
P03007
none
Chatrchyan, S., Khachatryan, V., Sirunyan, A., Adam, W., Arnold, B., Bergauer, H., et al. (2010). Measurement of the muon stopping power in lead tungstate. JOURNAL OF INSTRUMENTATION, 5(3), P03007-P03007 [10.1088/1748-0221/5/03/P03007].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/28905
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