Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV

Detalhes bibliográficos
Autor(a) principal: Tumasyan, Armen
Data de Publicação: 2023
Outros Autores: Silveira, Gustavo Gil da, Bernardes, César Augusto, CMS Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/272287
Resumo: The first observation of the production of W ± W ± bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138  fb−1 recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7 ± 11.2 (stat)+ 9.5 − 8.6 (syst) ± 12.1 (model) fb, whereas the measured fiducial cross section is 6.28 ± 0.81 (stat) ± 0.69 (syst) ± 0.37 (model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.
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spelling Tumasyan, ArmenSilveira, Gustavo Gil daBernardes, César AugustoCMS Collaboration2024-02-28T05:03:17Z20230031-9007http://hdl.handle.net/10183/272287001196801The first observation of the production of W ± W ± bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138  fb−1 recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7 ± 11.2 (stat)+ 9.5 − 8.6 (syst) ± 12.1 (model) fb, whereas the measured fiducial cross section is 6.28 ± 0.81 (stat) ± 0.69 (syst) ± 0.37 (model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.application/pdfengPhysical review letters. Melville. Vol. 131, no. 9 (Sept. 2023), 091803, 20 p.Aceleradores de partículasColisões proton-protonBosons WObservation of same-sign WW production from double parton scattering in 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:UFRGSTEXT001196801.pdf.txt001196801.pdf.txtExtracted Texttext/plain100796http://www.lume.ufrgs.br/bitstream/10183/272287/2/001196801.pdf.txt928bc5d06bde6846ca9b314e442e39b7MD52ORIGINAL001196801.pdfTexto completo (inglês)application/pdf36899856http://www.lume.ufrgs.br/bitstream/10183/272287/1/001196801.pdf86b3408bc8fb2322a28b77fa6e242e0bMD5110183/2722872024-02-29 04:58:59.511458oai:www.lume.ufrgs.br:10183/272287Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-02-29T07:58:59Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
title Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
spellingShingle Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
Tumasyan, Armen
Aceleradores de partículas
Colisões proton-proton
Bosons W
title_short Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
title_full Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
title_fullStr Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
title_full_unstemmed Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
title_sort Observation of same-sign WW production from double parton scattering in proton-proton collisions at √s = 13 TeV
author Tumasyan, Armen
author_facet Tumasyan, Armen
Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
author_role author
author2 Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
author2_role author
author
author
dc.contributor.author.fl_str_mv Tumasyan, Armen
Silveira, Gustavo Gil da
Bernardes, César Augusto
CMS Collaboration
dc.subject.por.fl_str_mv Aceleradores de partículas
Colisões proton-proton
Bosons W
topic Aceleradores de partículas
Colisões proton-proton
Bosons W
description The first observation of the production of W ± W ± bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138  fb−1 recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7 ± 11.2 (stat)+ 9.5 − 8.6 (syst) ± 12.1 (model) fb, whereas the measured fiducial cross section is 6.28 ± 0.81 (stat) ± 0.69 (syst) ± 0.37 (model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.
publishDate 2023
dc.date.issued.fl_str_mv 2023
dc.date.accessioned.fl_str_mv 2024-02-28T05:03:17Z
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/10183/272287
dc.identifier.issn.pt_BR.fl_str_mv 0031-9007
dc.identifier.nrb.pt_BR.fl_str_mv 001196801
identifier_str_mv 0031-9007
001196801
url http://hdl.handle.net/10183/272287
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Physical review letters. Melville. Vol. 131, no. 9 (Sept. 2023), 091803, 20 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)
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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
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