Running of the top quark mass from proton-proton collisions at √s = 13 TeV; Physics Letters B; Vol. 803

Running of the top quark mass from proton-proton collisions at √s = 13 TeV; Physics Letters B; Vol. 803

Dades bibliogràfiques
Parent link:Physics Letters B
Vol. 803.— 2020.— [135263, 24 p.]
Autor corporatiu: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Altres autors: Sirunyan А. М., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich
Sumari:Title screen
The running of the top quark mass is experimentally investigated for the first time. The mass of the top quark in the modified minimal subtraction (MS‾) renormalization scheme is extracted from a comparison of the differential top quark-antiquark (tt¯) cross section as a function of the invariant mass of the tt¯ system to next-to-leading-order theoretical predictions. The differential cross section is determined at the parton level by means of a maximum-likelihood fit to distributions of final-state observables. The analysis is performed using tt¯ candidate events in the e± μ∓ channel in proton-proton collision data at a centre-of-mass energy of 13 TeV recorded by the CMS detector at the CERN LHC in 2016, corresponding to an integrated luminosity of 35.9fb−1. The extracted running is found to be compatible with the scale dependence predicted by the corresponding renormalization group equation. In this analysis, the running is probed up to a scale of the order of 1 TeV.
Idioma:anglès
Publicat: 2020
Matèries:
электронный ресурс
труды учёных ТПУ
CMS
physics
top quark mass
QCD
renormalization
Accés en línia:https://doi.org/10.1016/j.physletb.2020.135263
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666216

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