Artículos de revistas
Measurements of the associated production of a Z boson and b jets in pp collisions at root s=8 TeV
Fecha
2017-11-08Registro en:
European Physical Journal C. New York: Springer, v. 77, n. 11, 34 p., 2017.
1434-6044
10.1140/epjc/s10052-017-5140-y
WOS:000414942400001
Autor
Yerevan Phys Inst
Inst Hochenergiephys
Natl Ctr Particle & High Energy Phys
Univ Antwerp
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Inst Nucl Energy Res
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Institución
Resumen
Measurements of the associated production of a Z boson with at least one jet originating from a b quark in proton-proton collisions at root s = 8 TeV are presented. Differential cross sections are measured with data collected by the CMS experiment corresponding to an integrated luminosity of 19.8 fb(-1). Z bosons are reconstructed through their decays to electrons and muons. Cross sections are measured as a function of observables characterizing the kinematics of the b jet and the Z boson. Ratios of differential cross sections for the associated production with at least one b jet to the associated production with any jet are also presented. The production of a Z boson with at least two b jets is investigated, and differential cross sections are measured for the dijet system. Results are compared to theoretical predictions, testing two different flavour schemes for the choice of initial-state partons.