Artículos de revistas
Determination of jet energy calibration and transverse momentum resolution in CMS
Fecha
2011-11-01Registro en:
Journal of Instrumentation. Bristol: Iop Publishing Ltd, v. 6, p. 50, 2011.
1748-0221
10.1088/1748-0221/6/11/P11002
WOS:000298320400037
WOS000298320400037.pdf
Autor
Yerevan Phys Inst
OeAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Univ Libre Brussels
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Catholic Univ Louvain
Univ Mons
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Soltan Inst Nucl Studies
Lab Instrumentacao & Fis Expt Particulas
Joint Inst Nucl Res
Petersburg Nucl Phys Inst
Inst Nucl Res
Institute for Theoretical and Experimental Physics (ITEP)
Moscow MV Lomonosov State Univ
PN Lebedev Phys Inst
Inst High Energy Phys
University of Belgrade
Universidade Estadual Paulista (Unesp)
Vinca Inst Nucl Sci
CIEMAT
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Institución
Resumen
Measurements of the jet energy calibration and transverse momentum resolution in CMS are presented, performed with a data sample collected in proton-proton collisions at a centre-of-mass energy of 7TeV, corresponding to an integrated luminosity of 36p(-1). The transverse momentum balance in dijet and gamma/Z+jets events is used to measure the jet energy response in the CMS detector, as well as the transverse momentum resolution. The results are presented for three different methods to reconstruct jets: a calorimeter-based approach, the Jet-Plus-Track approach, which improves the measurement of calorimeter jets by exploiting the associated tracks, and the Particle Flow approach, which attempts to reconstruct individually each particle in the event, prior to the jet clustering, based on information from all relevant subdetectors.