Running of the top quark mass from proton-proton collisions at √s = 13 TeV

Detalhes bibliográficos
Autor(a) principal: Sirunyan, A. M.
Data de Publicação: 2020
Outros Autores: Silveira, Gustavo Gil da, CMS Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/211685
Resumo: 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.
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spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2020-07-10T03:41:45Z20200370-2693http://hdl.handle.net/10183/211685001115042The 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.application/pdfengPhysics letters. B. Amsterdam. Vol. 803 (Apr. 2020), 135263, 24 p.Aceleradores de partículasColisões proton-protonCMSPhysicsTop quark massQCDRenormalizationRunning of the top quark mass from proton-proton collisions at √s = 13 TeVEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001115042.pdf.txt001115042.pdf.txtExtracted Texttext/plain99076http://www.lume.ufrgs.br/bitstream/10183/211685/2/001115042.pdf.txt84111105a284e0485847f560335393c7MD52ORIGINAL001115042.pdfTexto completo (inglês)application/pdf898272http://www.lume.ufrgs.br/bitstream/10183/211685/1/001115042.pdf5a426317bc1d892b7d80a92286f6262dMD5110183/2116852023-07-22 03:40:47.688731oai:www.lume.ufrgs.br:10183/211685Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-22T06:40:47Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Running of the top quark mass from proton-proton collisions at √s = 13 TeV
title Running of the top quark mass from proton-proton collisions at √s = 13 TeV
spellingShingle Running of the top quark mass from proton-proton collisions at √s = 13 TeV
Sirunyan, A. M.
Aceleradores de partículas
Colisões proton-proton
CMS
Physics
Top quark mass
QCD
Renormalization
title_short Running of the top quark mass from proton-proton collisions at √s = 13 TeV
title_full Running of the top quark mass from proton-proton collisions at √s = 13 TeV
title_fullStr Running of the top quark mass from proton-proton collisions at √s = 13 TeV
title_full_unstemmed Running of the top quark mass from proton-proton collisions at √s = 13 TeV
title_sort Running of the top quark mass from proton-proton collisions at √s = 13 TeV
author Sirunyan, A. M.
author_facet Sirunyan, A. M.
Silveira, Gustavo Gil da
CMS Collaboration
author_role author
author2 Silveira, Gustavo Gil da
CMS Collaboration
author2_role author
author
dc.contributor.author.fl_str_mv Sirunyan, A. M.
Silveira, Gustavo Gil da
CMS Collaboration
dc.subject.por.fl_str_mv Aceleradores de partículas
Colisões proton-proton
topic Aceleradores de partículas
Colisões proton-proton
CMS
Physics
Top quark mass
QCD
Renormalization
dc.subject.eng.fl_str_mv CMS
Physics
Top quark mass
QCD
Renormalization
description 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.
publishDate 2020
dc.date.accessioned.fl_str_mv 2020-07-10T03:41:45Z
dc.date.issued.fl_str_mv 2020
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/211685
dc.identifier.issn.pt_BR.fl_str_mv 0370-2693
dc.identifier.nrb.pt_BR.fl_str_mv 001115042
identifier_str_mv 0370-2693
001115042
url http://hdl.handle.net/10183/211685
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physics letters. B. Amsterdam. Vol. 803 (Apr. 2020), 135263, 24 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/211685/2/001115042.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/211685/1/001115042.pdf
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repository.mail.fl_str_mv
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