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“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 12066
School of Particles and Accelerator
  Title:   Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS
  Author(s): 
1.  Hessamadin Arfaei
2.  Hamed Bakhshiansohi
3.  Seyed Mohsen Etesami
4.  Ali Fahim
5.  Majid Hashemi
6.  Hoda Hesari
7.  Abideh Jafari
8.  Mohsen Khakzad
9.  A Mohammadi
10.  Mojtaba Mohammadi Najafabadi
11.  Saeid Paktinat
12.  Batool Safarzadeh
13.  Maryam Zeinali
  Status:   Published
  Journal: JINST
  No.:  P11002
  Vol.:  6
  Year:  2011
  Supported by:  IPM
  Abstract:
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 7 TeV, corresponding to an integrated luminosity of 36 pb-1. The transverse momentum balance in dijet and g/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

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