Artículos de revistas
Measurement of the triple-differential dijet cross section in proton-proton collisions at root s=8 TeV and constraints on parton distribution functions
Fecha
2017-11-07Registro en:
European Physical Journal C. New York: Springer, v. 77, n. 11, 29 p., 2017.
1434-6044
10.1140/epjc/s10052-017-5286-7
WOS:000414942200002
Autor
CERN
Yerevan Phys Inst
Inst Hochenergiephys
Inst Nucl Problems
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
Univ Libre Bruxelles
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Catholic Univ Louvain
Univ Mons
Ctr Brasileiro Pesquisas Fis
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (UNESP)
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Inst Nucl Energy Res
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Institución
Resumen
A measurement is presented of the triple-differential dijet cross section at a centre-of-mass energy of 8 TeV using 19.7 fb(-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 alpha(S)(M-Z) = 0.1199 +/- 0.0015 (exp)(-0.0020)(+0.0031) (theo), where M-Z is the mass of the Z boson.