Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/203931 |
Resumo: | A search for decays of the Higgs and Z boson to pairs of J/ψ or Y (nS) (n = 1, 2, 3) mesons, with their subsequent decay to μ+μ- pairs, is presented. The analysis uses data from proton-proton collisions at √s=13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb-¹. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8 x 10-3 and 2.2 x 10-6 for the Higgs and Z boson, respectively, while in the combined Y (nS) pair channel, the limits are 1.4 x 10-³ and 1.5 x 10-6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22–29% and increase by about 10–13%, respectively. |
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Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2019-12-27T04:05:35Z20190370-2693http://hdl.handle.net/10183/203931001105706A search for decays of the Higgs and Z boson to pairs of J/ψ or Y (nS) (n = 1, 2, 3) mesons, with their subsequent decay to μ+μ- pairs, is presented. The analysis uses data from proton-proton collisions at √s=13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb-¹. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8 x 10-3 and 2.2 x 10-6 for the Higgs and Z boson, respectively, while in the combined Y (nS) pair channel, the limits are 1.4 x 10-³ and 1.5 x 10-6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22–29% and increase by about 10–13%, respectively.application/pdfengPhysics letters. B. Amsterdam. Vol. 797 (Oct. 2019), 134811, 22 p.Aceleradores de partículasColisões proton-protonBosons de higgsBosons ZCMSStandard model physicsHiggs bosonZ bosonRare decaysSearch for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state 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:UFRGSTEXT001105706.pdf.txt001105706.pdf.txtExtracted Texttext/plain88576http://www.lume.ufrgs.br/bitstream/10183/203931/2/001105706.pdf.txt2bda966b93e1ee74bc5c3e1c2b6ac98cMD52ORIGINAL001105706.pdfTexto completo (inglês)application/pdf648051http://www.lume.ufrgs.br/bitstream/10183/203931/1/001105706.pdf0893353d4de27976f82aa76da4e2afe5MD5110183/2039312023-08-05 03:40:14.048644oai:www.lume.ufrgs.br:10183/203931Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-05T06:40:14Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV |
title |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV |
spellingShingle |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV Sirunyan, A. M. Aceleradores de partículas Colisões proton-proton Bosons de higgs Bosons Z CMS Standard model physics Higgs boson Z boson Rare decays |
title_short |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV |
title_full |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV |
title_fullStr |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV |
title_full_unstemmed |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeV |
title_sort |
Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state 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 Bosons de higgs Bosons Z |
topic |
Aceleradores de partículas Colisões proton-proton Bosons de higgs Bosons Z CMS Standard model physics Higgs boson Z boson Rare decays |
dc.subject.eng.fl_str_mv |
CMS Standard model physics Higgs boson Z boson Rare decays |
description |
A search for decays of the Higgs and Z boson to pairs of J/ψ or Y (nS) (n = 1, 2, 3) mesons, with their subsequent decay to μ+μ- pairs, is presented. The analysis uses data from proton-proton collisions at √s=13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb-¹. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8 x 10-3 and 2.2 x 10-6 for the Higgs and Z boson, respectively, while in the combined Y (nS) pair channel, the limits are 1.4 x 10-³ and 1.5 x 10-6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22–29% and increase by about 10–13%, respectively. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-12-27T04:05:35Z |
dc.date.issued.fl_str_mv |
2019 |
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/10183/203931 |
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0370-2693 |
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001105706 |
identifier_str_mv |
0370-2693 001105706 |
url |
http://hdl.handle.net/10183/203931 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physics letters. B. Amsterdam. Vol. 797 (Oct. 2019), 134811, 22 p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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