Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6344
Title: Measurement and QCD analysis of double-differential inclusive jet cross sections in pp collisions at ?s=8 TeV and cross section ratios to 2.76 and 7 TeV
Authors: CMS Collaboration
Karapınar, Güler
Karapınar, Güler
Izmir Institute of Technology. Mathematics
Keywords: Large Hadron Collider (LHC)
Compact Muon Solenoid
Quantum Chromodynamics (QCD)
Issue Date: Mar-2017
Publisher: Springer Verlag
Source: Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T.,...CMS Collaboration (2017). Measurement and QCD analysis of double-differential inclusive jet cross sections in pp collisions at √s=8 TeV and cross section ratios to 2.76 and 7 TeV. Journal of High Energy Physics, 2017(3). doi:10.1007/JHEP03(2017)156
Abstract: A measurement of the double-differential inclusive jet cross section as a function of the jet transverse momentum pT and the absolute jet rapidity |y| is presented. Data from LHC proton-proton collisions at s=8 TeV, corresponding to an integrated luminosity of 19.7 fb−1, have been collected with the CMS detector. Jets are reconstructed using the anti-kT clustering algorithm with a size parameter of 0.7 in a phase space region covering jet pT from 74 GeV up to 2.5 TeV and jet absolute rapidity up to |y| = 3.0. The low-pT jet range between 21 and 74 GeV is also studied up to |y| = 4.7, using a dedicated data sample corresponding to an integrated luminosity of 5.6 pb−1. The measured jet cross section is corrected for detector effects and compared with the predictions from perturbative QCD at next-to-leading order (NLO) using various sets of parton distribution functions (PDF). Cross section ratios to the corresponding measurements performed at 2.76 and 7 TeV are presented. From the measured double-differential jet cross section, the value of the strong coupling constant evaluated at the Z mass is αS(MZ) = 0.1164− 0.0043 + 0.0060, where the errors include the PDF, scale, nonperturbative effects and experimental uncertainties, using the CT10 NLO PDFs. Improved constraints on PDFs based on the inclusive jet cross section measurement are presented.[Figure not available: see fulltext.]
URI: http://doi.org/10.1007/JHEP03(2017)156
http://hdl.handle.net/11147/6344
ISSN: 1029-8479
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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