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Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
Chatrchyan S., Sillou D., Besancon M., Choudhury S., Dejardin M. et al
Journal of Instrumentation 7 (2012) P10002 - http://hal.in2p3.fr/in2p3-00710068
Physique/Physique des Hautes Energies - Expérience
Physique/Physique/Instrumentations et Détecteurs
Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
S. Chatrchyan, D. Sillou1, M. Besancon2, S. Choudhury2, M. Dejardin2, D. Denegri2, B. Fabbro2, J.L. Faure2, F. Ferri2, S. Ganjour2, A. Givernaud2, P. Gras2, G. Hamel de Monchenault2, P. Jarry2, E. Locci2, J. Malcles2, L. Millischer2, J. Rander2, A. Rosowsky2, I. Shreyber2, M. Titov2, S. Baffioni3, F. Beaudette3, L. Benhabib3, L. Bianchini3, M. Bluj3, C. Broutin3, Pierre Busson ()3, C. Charlot3, N. Daci3, T. Dahms3, L. Dobrzynski3, S. Elgammal3, R. Granier de Cassagnac3, M. Haguenauer3, P. Mine3, C. Mironov3, C. Ochando3, P. Paganini3, D. Sabes3, R. Salerno3, Y. Sirois3, C. Thiebaux3, C. Veelken3, A. Zabi3, J.-L. Agram4, J. Andrea4, D. Bloch4, D. Bodin4, J.-M. Brom4, M. Cardaci4, E.C. Chabert4, C. Collard4, E. Conte4, F. Drouhin4, C. Ferro4, J.-C. Fontaine4, D. Gele4, U. Goerlach4, P. Juillot4, M. Karim4, A.-C. Le Bihan4, P. Van Hove4, F. Fassi5, D. Mercier5, C. Baty6, S. Beauceron6, N. Beaupere6, M. Bedjidian6, O. Bondu6, G. Boudoul6, D. Boumediene6, H. Brun6, J. Chasserat6, R. Chierici6, D. Contardo6, P. Depasse6, H. El Mamouni6, A. Falkiewicz6, J. Fay6, S. Gascon6, M. Gouzevitch6, B. Ille6, T. Kurca6, T. Le Grand6, M. Lethuillier6, L. Mirabito6, S. Perries6, V. Sordini6, S. Tosi6, Y. Tschudi6, P. Verdier6, S. Viret6, M. Boutemeur7
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
http://wwwlapp.in2p3.fr/
CNRS : UMR5814 – IN2P3 – Université de Savoie
9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France
France
2 :  IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)
CEA : DSM/IRFU
France
3 :  LLR - Laboratoire Leprince-Ringuet
http://polywww.in2p3.fr/
CNRS : UMR7638 – IN2P3 – Polytechnique - X
Route de Saclay - 91128 Palaiseau Cedex
France
4 :  DRS-IPHC - Département Recherches Subatomiques
CNRS : UMR7178 – IN2P3 – Université de Strasbourg
23 rue du Loess - BP28 67037 Strasbourg cedex 2
France
5 :  CC IN2P3 - Centre de Calcul de l'inst. national de phy. nucléaire et de phy. des particules
http://cc.in2p3.fr/
CNRS : USR6402 – IN2P3
12-14, boulevard Niels Bohr 69622 VILLEURBANNE CEDEX
France
6 :  IPNL - Institut de Physique Nucléaire de Lyon
http://www.ipnl.in2p3.fr/
CNRS : UMR5822 – IN2P3 – Université Claude Bernard - Lyon I (UCBL)
France
7 :  SYMME - Laboratoire SYstèmes et Matériaux pour la MEcatronique
http://www.symme.univ-savoie.fr/
Université de Savoie
BP 806 74016 ANNECY Cedex
France
The performance of muon reconstruction, identification, and triggering in CMS has been studied using 40 inverse picobarns of data collected in pp collisions at sqrt(s) = 7 TeV at the LHC in 2010. A few benchmark sets of selection criteria covering a wide range of physics analysis needs have been examined. For all considered selections, the efficiency to reconstruct and identify a muon with a transverse momentum pT larger than a few GeV is above 95% over the whole region of pseudorapidity covered by the CMS muon system, abs(eta)<2.4, while the probability to misidentify a hadron as a muon is well below 1%. The efficiency to trigger on single muons with pT above a few GeV is higher than 90% over the full eta range, and typically substantially better. The overall momentum scale is measured to a precision of 0.2% with muons from Z decays. The transverse momentum resolution varies from 1% to 6% depending on pseudorapidity for muons with pT below 100 GeV and, using cosmic rays, it is shown to be better than 10% in the central region up to pT = 1 TeV. Observed distributions of all quantities are well reproduced by the Monte Carlo simulation.
CMS

Articles dans des revues avec comité de lecture
2012
Journal of Instrumentation
Publisher Institute of Physics: Hybrid Open Access
ISSN 1748-0221 
7
P10002

Submitted to the Journal of Instrumentation ; see paper for full list of authors
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1206.4071