Performance of the muon identification at LHCb

  • F. Archilli
  • , W. Baldini
  • , G. Bencivenni
  • , N. Bondar
  • , W. Bonivento
  • , S. Cadeddu
  • , P. Campana
  • , A. Cardini
  • , P. Ciambrone
  • , X. Cid Vidal
  • , C. Deplano
  • , P. De Simone
  • , A. Falabella
  • , M. Frosini
  • , S. Furcas
  • , E. Furfaro
  • , M. Gandelman
  • , J. A. Hernando Morata
  • , G. Graziani
  • , A. Lai
  • G. Lanfranchi, J. H. Lopes, O. Maev, G. Manca, G. Martellotti, A. Massafferri, D. Milanes, R. Oldeman, M. Palutan, G. Passaleva, D. Pinci, E. Polycarpo, R. Santacesaria, E. Santovetti, A. Sarti, A. Satta, B. Schmidt, B. Sciascia, F. Soomro, A. Sciubba, S. Vecchi

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

The performance of the muon identification in LHCb is extracted from data using muons and hadrons produced in J/ψ μ+μ-, Λ0- and D+π+D 0(K-π+) decays. The muon identification procedure is based on the pattern of hits in the muon chambers. A momentum dependent binary requirement is used to reduce the probability of hadrons to be misidentified as muons to the level of 1%, keeping the muon efficiency in the range of 95-98%. As further refinement, a likelihood is built for the muon and non-muon hypotheses. Adding a requirement on this likelihood that provides a total muon efficiency at the level of 93%, the hadron misidentification probabilities are below 0.6%.

Original languageEnglish
Article numberP10020
JournalJournal of Instrumentation
Volume8
Issue number10
DOIs
StatePublished - Oct 2013
Externally publishedYes

Keywords

  • Particle identification methods
  • Performance of High Energy Physics Detectors

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