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Measurement of the top quark mass in the all-jets final state at √s=13TeV and combination with the lepton+jets channel

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2019
Sirunyan_2019_MeasurementOfTheTopQuarkMass_CMS.pdf (826.9Kb)
Autori
Sirunyan, A M
Tumasyan, A
Adam, W
Ambrogi, F
Adžić, Petar
Ćirković, Predrag
Devetak, Damir
Đorđević, Miloš
Milenović, Predrag
Milošević, Jovan
Ostala autorstva
CMS Collaboration
CMS Collaboration (ukupan broj autora: 2285)
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
A top quark mass measurement is performed using 35.9fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV. The measurement uses the t t ¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the t t ¯ system and suppress the multijet background. Using the ideogram method, the top quark mass (m t ) is determined, simultaneously constraining an additional jet energy scale factor (JSF). The resulting value of mt=172.34±0.20(stat+JSF)±0.70(syst)GeV is in good agreement with previous measurements. In addition, a combined measurement that uses the t t ¯ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an m t measurement of 172.26±0.07(stat+JSF)±0.61(syst)GeV. This is the first combined m t extraction from the lepton+jets and all-jets channels through a single likelihood function. © 2019, CERN for the benefit of the CMS collaboration.
Izvor:
European Physical Journal C, 2019, 79, 4

DOI: 10.1140/epjc/s10052-019-6788-2

ISSN: 1434-6044; 1434-6052

PubMed: 31031568

WoS: 000463723300003

Scopus: 2-s2.0-85064056375
[ Google Scholar ]
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/8142
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  • Radovi istraživača
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Vinča

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