Measurement and QCD analysis of double-differential inclusive jet cross-sections in pp collisions at s√= 8 TeV and ratios to 2.76 and 7 TeV

Open access
Author
CMS Collaboration
Khachatryan, Vardan
Bachmair, Felix
Bäni, Lukas
Bianchini, Lorenzo
Casal, Bruno
Dissertori, Günther
Dittmar, Michael
Donegà, Mauro
Eller, Philipp
Grab, Christoph
Heidegger, Constantin
Hits, Dmitry
Hoss, Jan
Kasieczka, Gregor
Lecomte, Pierre
Lustermann, Werner
Mangano, Boris
Marionneau, Matthieu
Martinez Ruiz del Arbol, Pablo
Masciovecchio, Mario
Pata, Joosep
Pauss, Felicitas
Perrin, Gaël
Perrozzi, Luca
Quittnat, Milena
Rossin, Marco
Schönenberger, Myriam
Starodumov, Andrey
Takahashi, Maiko
Tavolaro, Vittorio R.
Theofilatos, Konstantinos
Wallny, Rainer
et al.
Date
2017-03Type
- Journal Article
Citations
Cited 27 times in
Web of Science
Cited 23 times in
Scopus
ETH Bibliography
yes
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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. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000124506Publication status
publishedJournal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Hadron-Hadron scattering (experiments); Jet physics; QCD; Jets; Proton-proton scatteringOrganisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
03904 - Wallny, Rainer / Wallny, Rainer
08803 - Grab, Christoph (Tit.Prof.)
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Show all metadata
Citations
Cited 27 times in
Web of Science
Cited 23 times in
Scopus
ETH Bibliography
yes
Altmetrics