Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 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/10183/182117
Resumo: A search is presented for new high-mass resonances decaying into electron or muon pairs. The search uses proton-proton collision data at a centre-of-mass energy of 13TeV collected by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 36 fb1. Observations are in agreement with standard model expectations. Upper limits on the product of a new resonance production cross section and branching fraction to dileptons are calculated in a model-independent manner. This permits the interpretation of the limits in models predicting a narrow dielectron or dimuon resonance. A scan of di erent intrinsic width hypotheses is performed. Limits are set on the masses of various hypothetical particles. For the Z0 SSM (Z0 ) particle, which arises in the sequential standard model (superstring-inspired model), a lower mass limit of 4.50 (3.90)TeV is set at 95% con dence level. The lightest Kaluza-Klein graviton arising in the Randall-Sundrum model of extra dimensions, with coupling parameters k=MPl of 0.01, 0.05, and 0.10, is excluded at 95% con dence level below 2.10, 3.65, and 4.25TeV, respectively. In a simpli ed model of dark matter production via a vector or axial vector mediator, limits at 95% con dence level are obtained on the masses of the dark matter particle and its mediator.
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spelling Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2018-09-18T02:30:12Z20181029-8479http://hdl.handle.net/10183/182117001073288A search is presented for new high-mass resonances decaying into electron or muon pairs. The search uses proton-proton collision data at a centre-of-mass energy of 13TeV collected by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 36 fb1. Observations are in agreement with standard model expectations. Upper limits on the product of a new resonance production cross section and branching fraction to dileptons are calculated in a model-independent manner. This permits the interpretation of the limits in models predicting a narrow dielectron or dimuon resonance. A scan of di erent intrinsic width hypotheses is performed. Limits are set on the masses of various hypothetical particles. For the Z0 SSM (Z0 ) particle, which arises in the sequential standard model (superstring-inspired model), a lower mass limit of 4.50 (3.90)TeV is set at 95% con dence level. The lightest Kaluza-Klein graviton arising in the Randall-Sundrum model of extra dimensions, with coupling parameters k=MPl of 0.01, 0.05, and 0.10, is excluded at 95% con dence level below 2.10, 3.65, and 4.25TeV, respectively. In a simpli ed model of dark matter production via a vector or axial vector mediator, limits at 95% con dence level are obtained on the masses of the dark matter particle and its mediator.application/pdfengThe journal of high energy physics. Trieste. No. 6 (June 2018), 120, 43 p.Aceleradores de partículasColisões proton-protonProdução de leptonsBeyond Standard ModelHadron-Hadron scattering (experiments)Lepton productionParticle and resonance productionSearch for high-mass resonances in dilepton final states 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:UFRGSORIGINAL001073288.pdfTexto completo (inglês)application/pdf1836570http://www.lume.ufrgs.br/bitstream/10183/182117/1/001073288.pdf4b9b9dfc6c3bb3444039862292da7997MD51TEXT001073288.pdf.txt001073288.pdf.txtExtracted Texttext/plain116997http://www.lume.ufrgs.br/bitstream/10183/182117/2/001073288.pdf.txtede3bdb3e5c4f425cd6c9a5fd6d5931fMD52THUMBNAIL001073288.pdf.jpg001073288.pdf.jpgGenerated Thumbnailimage/jpeg1527http://www.lume.ufrgs.br/bitstream/10183/182117/3/001073288.pdf.jpgd5129ccbbfd915bf75d8935484251fb7MD5310183/1821172023-08-05 03:38:34.335417oai:www.lume.ufrgs.br:10183/182117Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-05T06:38:34Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
title Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
spellingShingle Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
Sirunyan, A. M.
Aceleradores de partículas
Colisões proton-proton
Produção de leptons
Beyond Standard Model
Hadron-Hadron scattering (experiments)
Lepton production
Particle and resonance production
title_short Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
title_full Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
title_fullStr Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
title_full_unstemmed Search for high-mass resonances in dilepton final states in proton-proton collisions at √s = 13 TeV
title_sort Search for high-mass resonances in dilepton final states in 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
Produção de leptons
topic Aceleradores de partículas
Colisões proton-proton
Produção de leptons
Beyond Standard Model
Hadron-Hadron scattering (experiments)
Lepton production
Particle and resonance production
dc.subject.eng.fl_str_mv Beyond Standard Model
Hadron-Hadron scattering (experiments)
Lepton production
Particle and resonance production
description A search is presented for new high-mass resonances decaying into electron or muon pairs. The search uses proton-proton collision data at a centre-of-mass energy of 13TeV collected by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 36 fb1. Observations are in agreement with standard model expectations. Upper limits on the product of a new resonance production cross section and branching fraction to dileptons are calculated in a model-independent manner. This permits the interpretation of the limits in models predicting a narrow dielectron or dimuon resonance. A scan of di erent intrinsic width hypotheses is performed. Limits are set on the masses of various hypothetical particles. For the Z0 SSM (Z0 ) particle, which arises in the sequential standard model (superstring-inspired model), a lower mass limit of 4.50 (3.90)TeV is set at 95% con dence level. The lightest Kaluza-Klein graviton arising in the Randall-Sundrum model of extra dimensions, with coupling parameters k=MPl of 0.01, 0.05, and 0.10, is excluded at 95% con dence level below 2.10, 3.65, and 4.25TeV, respectively. In a simpli ed model of dark matter production via a vector or axial vector mediator, limits at 95% con dence level are obtained on the masses of the dark matter particle and its mediator.
publishDate 2018
dc.date.accessioned.fl_str_mv 2018-09-18T02:30:12Z
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dc.relation.ispartof.pt_BR.fl_str_mv The journal of high energy physics. Trieste. No. 6 (June 2018), 120, 43 p.
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