Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at √s=13  TeV; Physical Review D; Vol. 102, iss. 3

Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at √s=13  TeV; Physical Review D; Vol. 102, iss. 3

Detalles Bibliográficos
Parent link:Physical Review D: particles, fields, gravitation, and cosmology.— , 1970-
Vol. 102, iss. 3.— 2020.— [032007, 29 p.]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Outros autores: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich
Summary:Title screen
Ratios of cross sections, σ(Z+c  jets)/σ(Z+jets), σ(Z+b  jets)/σ(Z+jets), and σ(Z+c  jets)/σ(Z+b  jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in proton-proton collisions at √s=13  TeV. The data sample, collected by the CMS experiment at the CERN LHC, corresponds to an integrated luminosity of 35.9  fb−1, with a fiducial volume of pT>30  GeV and |η|<2.4 for the jets, where pT and η represent transverse momentum and pseudorapidity, respectively. The Z boson candidates come from leptonic decays into electrons or muons with pT>25  GeV and |η|<2.4, and the dilepton mass satisfies 71<mZ<111  GeV. The measured values are σ(Z+c  jets)/σ(Z+jets)=0.102±0.002±0.009, σ(Z+b  jets)/σ(Z+jets)=0.0633±0.0004±0.0015, and σ(Z+c  jets)/σ(Z+b  jets)=1.62±0.03±0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics calculations. These are the first measurements of the cross section ratios at 13 TeV.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:inglés
Publicado: 2020
Subjects:
электронный ресурс
труды учёных ТПУ
Acceso en liña:https://doi.org/10.1103/PhysRevD.102.032007
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666171

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