Measurement of the triple-differential dijet cross section in proton-proton collisions at √s = 8 TeV and constraints on parton distribution functions
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Sirunyan2017_Article_MeasurementOfTheTriple-differe.pdf
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Author(s)
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Apyan, Aram
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Date Issued
November 2017
Journal
The European Physical Journal C
Publisher
Springer Nature
Citation
Sirunyan, A. M., A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, et al. “Measurement of the Triple-Differential Dijet Cross Section in Proton-Proton Collisions at √s =8 TeV and Constraints on Parton Distribution Functions.” The European Physical Journal C 77, no. 11 (November 2017). © 2017, CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
A measurement is presented of the triple-differential dijet cross section at a centre-of-mass energy of 8 TeV using 19.7fb[superscript -1] of data collected with the CMS detector in proton-proton collisions at the LHC. The cross section is measured as a function of the average transverse momentum, half the rapidity separation, and the boost of the two leading jets in the event. The cross section is corrected for detector effects and compared to calculations in perturbative quantum chromodynamics at next-to-leading order accuracy, complemented with electroweak and nonperturbative corrections. New constraints on parton distribution functions are obtained and the inferred value of the strong coupling constant is α[subscript S](MZ)=0.1199±0.0015(exp)[subscript -0.0020][superscript +0.0031](theo), where M[subscript Z] is the mass of the Z boson. Keywords: CMS, Physics, QCD, PDF, Jets, Strong coupling constant, alpha-s
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1140/EPJC/S10052-017-5286-7
