Measurement of the inclusive 3-jet production differential cross section in proton-proton collisions at 7 TeV and determination of the strong coupling constant in the TeV range
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
22/10/2015
22/10/2015
01/05/2015
|
Resumo |
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton-proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5 fb(-1) collected with the CMS detector. The analysis is based on the three jets with the highest transverse momenta. The cross section is measured as a function of the invariant mass of the three jets in a range of 445-3270 GeV and in two bins of the maximum rapidity of the jets up to a value of 2. A comparison between the measurement and the prediction from perturbative QCD at next-to-leading order is performed. Within uncertainties, data and theory are in agreement. The sensitivity of the observable to the strong coupling constant alpha(S) is studied. A fit to all data points with 3-jet masses larger than 664 GeV gives a value of the strong coupling constant of alpha(S)(M-Z) = 0.1171 +/- 0.0013 (exp) (+0.0073)(-0.0047) (theo). |
Formato |
1-24 |
Identificador |
http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-015-3376-y European Physical Journal C. New York: Springer, v. 75, n. 186, p. 1-24, 2015. 1434-6044 http://hdl.handle.net/11449/129588 http://dx.doi.org/10.1140/epjc/s10052-015-3376-y WOS:000355673300005 |
Idioma(s) |
eng |
Publicador |
Springer |
Relação |
European Physical Journal C |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |