Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV

Detalhes bibliográficos
Autor(a) principal: Sirunyan, A. M.
Data de Publicação: 2018
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/10183/185112
Resumo: A measurement is presented of the effective leptonic weak mixing angle (sin2 θ eff) using the forward– backward asymmetry of Drell–Yan lepton pairs (μμ and ee) produced in proton–proton collisions at √ s = 8TeV at the CMS experiment of the LHC. The data correspond to integrated luminosities of 18.8 and 19.6 fb−1 in the dimuon and dielectron channels, respectively, containing 8.2 million dimuon and 4.9 million dielectron events. With more events and new analysis techniques, including constraints obtained on the parton distribution functions from the measured forward–backward asymmetry, the statistical and systematic uncertainties are significantly reduced relative to previous CMS measurements. The extracted value of sin2 θ eff from the combined dilepton data is sin2 θ eff = 0.23101 ± 0.00036 (stat) ± 0.00018 (syst) ± 0.00016 (theo) ± 0.00031 (parton distributions in proton) = 0.23101 ± 0.00053.
id UFRGS-2_d58339f10f1331d0dcbb799295b97f83
oai_identifier_str oai:www.lume.ufrgs.br:10183/185112
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2018-11-28T02:45:07Z20181434-6044http://hdl.handle.net/10183/185112001080804A measurement is presented of the effective leptonic weak mixing angle (sin2 θ eff) using the forward– backward asymmetry of Drell–Yan lepton pairs (μμ and ee) produced in proton–proton collisions at √ s = 8TeV at the CMS experiment of the LHC. The data correspond to integrated luminosities of 18.8 and 19.6 fb−1 in the dimuon and dielectron channels, respectively, containing 8.2 million dimuon and 4.9 million dielectron events. With more events and new analysis techniques, including constraints obtained on the parton distribution functions from the measured forward–backward asymmetry, the statistical and systematic uncertainties are significantly reduced relative to previous CMS measurements. The extracted value of sin2 θ eff from the combined dilepton data is sin2 θ eff = 0.23101 ± 0.00036 (stat) ± 0.00018 (syst) ± 0.00016 (theo) ± 0.00031 (parton distributions in proton) = 0.23101 ± 0.00053.application/pdfengThe European physical journal. C, Particles and fields. Berlin. Vol. 78, no. 9 (Sept. 2018), 701, 30 p.Aceleradores de partículasColisões proton-protonProcesso Drell-YanDileptonsMeasurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 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:UFRGSTEXT001080804.pdf.txt001080804.pdf.txtExtracted Texttext/plain113505http://www.lume.ufrgs.br/bitstream/10183/185112/2/001080804.pdf.txt0988fbbeae3a8a75c8e50d61fd17c62bMD52ORIGINAL001080804.pdfTexto completo (inglês)application/pdf1646842http://www.lume.ufrgs.br/bitstream/10183/185112/1/001080804.pdf3ee4e510857eecc6492482d0d9642561MD5110183/1851122023-08-05 03:38:59.870666oai:www.lume.ufrgs.br:10183/185112Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-05T06:38:59Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
title Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
spellingShingle Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
Sirunyan, A. M.
Aceleradores de partículas
Colisões proton-proton
Processo Drell-Yan
Dileptons
title_short Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
title_full Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
title_fullStr Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
title_full_unstemmed Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 TeV
title_sort Measurement of the weak mixing angle using the forward–backward asymmetry of Drell–Yan events in pp collisions at 8 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
Processo Drell-Yan
Dileptons
topic Aceleradores de partículas
Colisões proton-proton
Processo Drell-Yan
Dileptons
description A measurement is presented of the effective leptonic weak mixing angle (sin2 θ eff) using the forward– backward asymmetry of Drell–Yan lepton pairs (μμ and ee) produced in proton–proton collisions at √ s = 8TeV at the CMS experiment of the LHC. The data correspond to integrated luminosities of 18.8 and 19.6 fb−1 in the dimuon and dielectron channels, respectively, containing 8.2 million dimuon and 4.9 million dielectron events. With more events and new analysis techniques, including constraints obtained on the parton distribution functions from the measured forward–backward asymmetry, the statistical and systematic uncertainties are significantly reduced relative to previous CMS measurements. The extracted value of sin2 θ eff from the combined dilepton data is sin2 θ eff = 0.23101 ± 0.00036 (stat) ± 0.00018 (syst) ± 0.00016 (theo) ± 0.00031 (parton distributions in proton) = 0.23101 ± 0.00053.
publishDate 2018
dc.date.accessioned.fl_str_mv 2018-11-28T02:45:07Z
dc.date.issued.fl_str_mv 2018
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/10183/185112
dc.identifier.issn.pt_BR.fl_str_mv 1434-6044
dc.identifier.nrb.pt_BR.fl_str_mv 001080804
identifier_str_mv 1434-6044
001080804
url http://hdl.handle.net/10183/185112
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv The European physical journal. C, Particles and fields. Berlin. Vol. 78, no. 9 (Sept. 2018), 701, 30 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/10183/185112/2/001080804.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/185112/1/001080804.pdf
bitstream.checksum.fl_str_mv 0988fbbeae3a8a75c8e50d61fd17c62b
3ee4e510857eecc6492482d0d9642561
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)
repository.mail.fl_str_mv
_version_ 1798487389506633728

Registros relacionados