Constraints on parton distribution functions and extraction of the strong coupling constant from the inclusive jet cross section in pp collisions at √ s = 7TeV

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Issue Date
2015-06-26Author
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Bruner, Christopher
Murray, Michael J.
Sanders, Stephen J.
Wang, Quan
CMS Collaboration
Publisher
Springer Verlag
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© CERN for the benefit of the CMS collaboration 2015. This article is published with open access at Springerlink.com
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Show full item recordAbstract
The inclusive jet cross section for proton–proton collisions at a centre-of-mass energy of 7TeV was measured by the CMS Collaboration at the LHC with data corresponding to an integrated luminosity of 5.0fb−1. The measurement covers a phase space up to 2TeV in jet transverse momentum and 2.5 in absolute jet rapidity. The statistical precision of these data leads to stringent constraints on the parton distribution functions of the proton. The data provide important input for the gluon density at high fractions of the proton momentum and for the strong coupling constant at large energy scales. Using predictions from perturbative quantum chromodynamics at next-to-leading order, complemented with electroweak corrections, the constraining power of these data is investigated and the strong coupling constant at the Z boson mass MZ is determined to be αS(MZ)=0.1185±0.0019(exp)+0.0060−0.0037(theo), which is in agreement with the world average.
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Citation
Collaboration, C. M. S. (2015). Constraints on parton distribution functions and extraction of the strong coupling constant from the inclusive jet cross section in pp collisions at. Eur. Phys. J. C, 75, 288.
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