Journal article
Measurement And Qcd Analysis Of Double-Differential Inclusive Jet Cross Sections In Pp Collisions At Root S=8 Tev And Cross Section Ratios To 2.76 And 7 Tev
The journal of high energy physics, Vol.2017, 156
03/29/2017
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 p(T) and the absolute jet rapidity |y| is presented. Data from LHC proton-proton collisions at root 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-k(T) clustering algorithm with a size parameter of 0.7 in a phase space region covering jet p(T) from 74 GeV up to 2.5 TeV and jet absolute rapidity up to |y| = 3.0. The low-p(T) 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 alpha(S)(M-Z) = 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.
Details
- Title: Subtitle
- Measurement And Qcd Analysis Of Double-Differential Inclusive Jet Cross Sections In Pp Collisions At Root S=8 Tev And Cross Section Ratios To 2.76 And 7 Tev
- Creators
- CMS collaborationB. Bilki - University of IowaW Clarida - University of IowaKamuran Dilsiz - University of Iowa, Physics and AstronomyS. Durgut - University of IowaR. P. Gandrajula - University of IowaM. Haytmyradov - University of IowaV Khristenko - University of IowaJ-P Merlo - University of IowaH Mermerkaya - University of IowaA. Moeller - University of IowaJane M Nachtman - University of Iowa, Physics and AstronomyHasan Ogul - University of Iowa, Physics and AstronomyYasar Onel - Physics and AstronomyF. Ozok - University of IowaAldo Penzo - University of Iowa, Physics and AstronomyC. Snyder - University of IowaE. Tiras - University of IowaJ. Wetzel - University of IowaKai Yi - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The journal of high energy physics, Vol.2017, 156
- DOI
- 10.1007/JHEP03(2017)156
- ISSN
- 1029-8479
- eISSN
- 1029-8479
- Publisher
- Springer
- Language
- English
- Date published
- 03/29/2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428663002771
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