Measurement of the top quark mass with lepton+jets final states using pp pp collisions at s√=13TeV

Measurement of the top quark mass with lepton+jets final states using pp pp collisions at s√=13TeV

Bibliographic Details
Parent link:The European Physical Journal C: Scientific Journal
Vol. 78, iss. 11.— 2018.— [891, 27 р.,]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Other Authors: Sirunyan А. М., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Bergauer T. Thomas, Babaev A. A. Anton Anatoljevich
Summary:Title screen
The mass of the top quark is measured using a sample of tt¯tt¯ events collected by the CMS detector using proton-proton collisions at s√=13s=13 TeVTeV at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9fb−1fb−1. For each event the mass is reconstructed from a kinematic fit of the decay products to a tt¯tt¯ hypothesis. Using the ideogram method, the top quark mass is determined simultaneously with an overall jet energy scale factor (JSF), constrained by the mass of the W boson in qq¯¯¯′qq¯′ decays. The measurement is calibrated on samples simulated at next-to-leading order matched to a leading-order parton shower. The top quark mass is found to be 172.25±0.08(stat+JSF)±0.62(syst)GeV172.25±0.08(stat+JSF)±0.62(syst)GeV. The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of tt¯tt¯ production, and no indications of a bias in the measurements are observed.
Published: 2018
Subjects:
электронный ресурс
труды учёных ТПУ
протон-протонные соударения
кварки
заряженные частицы
Online Access:https://doi.org/10.1140/epjc/s10052-018-6332-9
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660788

Similar Items

Similar Items