Measurement of the Inclusive Jet pT spectra in pp Collisions at √s = 7 TeV

Abstract

A measurement of the inclusive jet cross section is performed using data corresponding to an integrated luminosity of about 34 pb−1 from proton-proton collisions collected by the CMS experiment at a center-of-mass energy of √s = 7 TeV. The measurement is made for jet transverse momenta in the range 18-1100 GeV and for rapidity values less than 3. Within experimental and theoretical uncertainties, the measured cross section is in good agreement with next-to-leading order perturbative QCD predictions.

Approved Plots from PAPER-QCD-10-011 ( click on plot to get .pdf (will be available as soon as the paper is out))

Figure Abbreviated Caption
PAPER_Figure_1-a.png Unsmearing correction factors determined as a function of rapidy y and jet transverse momentum pt.
PAPER_Figure_1-b.png Unsmeared inclusive jet pt spectra for different y bins with the next-to-leading-order (NLO) theoretical prediction, corrected for non-perturbative (NP) effects, superimposed.
The unsmeared measured spectra in data plotted as the ratio of data to theory prediction. The solid lines represent total theoretical systematic uncertainty. The shaded band about the data points represents the experimental systematic systematic uncertainty.
PAPER_Figure_2-a.png The unsmeared measured spectra in data plotted as the ratio of data to theory prediction. The pt spectra from nominal jets (labelled PF) clustered from reconstructed particles are shown, together with jets formed from calorimetric information only (labelled Calo). Both jet types are in good agreement with each other.

Measurement of the Inclusive Jet pT spectra in pp Collisions at √s = 7 TeV

Abstract

We report on a measurement of the inclusive jet cross section from pp collisions at a center-of-mass energy of √s = 7 TeV using data collected by theCMS experiment with an integrated luminosity of about 60nb−1 and in the pT range of 18-700 GeV. Several different jet reconstruction methods are investigated using an anti-kT clustering algorithm. Studies of the systematic uncertainties in transverse momentum for each reconstruction method are presented, and the measured cross sections are found to be in agreement with next-to-leading order perturbative QCD calculations, within the experimental and theoretical uncertainties.

Approved Plots from QCD-10-011 ( click on plot to get .pdf )

Figure Abbreviated Caption
Figure_001-a.gif Figure_002-a.gif Figure_003-a.gif Trigger pT spectra for jets at rapidity abs(y) < 0.5
Figure_001-b.gif Figure_002-b.gif Figure_003-b.gif Trigger efficiency as a function of jet pT for jets at rapidity abs(y) < 0.5
Figure_004-a.gif Figure_004-b.gif Figure_004-c.gif Jet pT resolution unfolding correction
Figure_005-a.gif Figure_005-b.gif Figure_005-c.gif Cross section measurement uncertainty
Figure_006-a.gif Figure_006-b.gif Non-perturbative corrections to NLO theory and theory uncertainties
Figure_007.gif Figure_008.gif Figure_009.gif Cross section measurement with different reconstruction methods
Figure_010-a.gif Figure_010-b.gif Figure_010-c.gif Cross section measurement over NLO theory prediction (bins abs(y)<1.5)
Figure_010-d.gif Figure_010-e.gif Figure_010-f.gif Cross section measurement over NLO theory prediction (bins 1.5<abs(y)<3.0)

Link to QCD-10-011 PAS in CDS

-- MikkoVoutilainen - 05-Aug-2010

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif Figure_001-a.gif r1 manage 14.5 K 2010-08-05 - 17:28 MikkoVoutilainen  
GIFgif Figure_001-b.gif r1 manage 14.0 K 2010-08-05 - 17:28 MikkoVoutilainen  
GIFgif Figure_002-a.gif r1 manage 17.4 K 2010-08-05 - 17:28 MikkoVoutilainen  
GIFgif Figure_002-b.gif r1 manage 19.4 K 2010-08-05 - 17:29 MikkoVoutilainen  
GIFgif Figure_003-a.gif r1 manage 19.3 K 2010-08-05 - 17:29 MikkoVoutilainen  
GIFgif Figure_003-b.gif r1 manage 20.2 K 2010-08-05 - 17:29 MikkoVoutilainen  
GIFgif Figure_004-a.gif r1 manage 22.0 K 2010-08-05 - 17:30 MikkoVoutilainen  
GIFgif Figure_004-b.gif r1 manage 22.0 K 2010-08-05 - 17:30 MikkoVoutilainen  
GIFgif Figure_004-c.gif r1 manage 24.3 K 2010-08-05 - 17:30 MikkoVoutilainen  
GIFgif Figure_005-a.gif r1 manage 21.4 K 2010-08-05 - 17:37 MikkoVoutilainen  
GIFgif Figure_005-b.gif r1 manage 20.5 K 2010-08-05 - 17:37 MikkoVoutilainen  
GIFgif Figure_005-c.gif r1 manage 20.8 K 2010-08-05 - 17:37 MikkoVoutilainen  
GIFgif Figure_006-a.gif r1 manage 23.3 K 2010-08-05 - 17:37 MikkoVoutilainen  
GIFgif Figure_006-b.gif r1 manage 20.2 K 2010-08-05 - 17:38 MikkoVoutilainen  
GIFgif Figure_007.gif r1 manage 34.0 K 2010-08-05 - 17:38 MikkoVoutilainen  
GIFgif Figure_008.gif r1 manage 33.9 K 2010-08-05 - 17:38 MikkoVoutilainen  
GIFgif Figure_009.gif r1 manage 35.9 K 2010-08-05 - 17:38 MikkoVoutilainen  
GIFgif Figure_010-a.gif r1 manage 23.9 K 2010-08-05 - 17:39 MikkoVoutilainen  
GIFgif Figure_010-b.gif r1 manage 24.4 K 2010-08-05 - 17:39 MikkoVoutilainen  
GIFgif Figure_010-c.gif r1 manage 23.5 K 2010-08-05 - 17:39 MikkoVoutilainen  
GIFgif Figure_010-d.gif r1 manage 23.8 K 2010-08-05 - 17:39 MikkoVoutilainen  
GIFgif Figure_010-e.gif r1 manage 22.7 K 2010-08-05 - 17:40 MikkoVoutilainen  
GIFgif Figure_010-f.gif r1 manage 22.4 K 2010-08-05 - 17:40 MikkoVoutilainen  
PNGpng PAPER_Figure_1-a.png r1 manage 47.0 K 2011-04-06 - 13:36 UnknownUser  
PNGpng PAPER_Figure_1-b.png r1 manage 72.2 K 2011-04-06 - 13:36 UnknownUser  
PNGpng PAPER_Figure_1-c.png r1 manage 44.3 K 2011-04-06 - 13:36 UnknownUser  
PNGpng PAPER_Figure_2-a.png r1 manage 38.4 K 2011-04-06 - 13:36 UnknownUser  
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