Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/182146 |
Resumo: | A search for a new scalar resonance decaying to a pair of Z bosons is performed in the mass range from 130 GeV to 3TeV, and for various width scenarios. The analysis is based on proton-proton collisions recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb1 at a center-of-mass energy of 13TeV. The Z boson pair decays are reconstructed using the 4`, 2`2q, and 2`2 nal states, where ` = e or . Both gluon fusion and electroweak production of the scalar resonance are considered, with a free parameter describing their relative cross sections. A dedicated categorization of events, based on the kinematic properties of associated jets, and matrix element techniques are employed for an optimal signal and background separation. A description of the interference between signal and background amplitudes for a resonance of an arbitrary width is included. No signi cant excess of events with respect to the standard model expectation is observed and limits are set on the product of the cross section for a new scalar boson and the branching fraction for its decay to ZZ for a large range of masses and widths. |
id |
UFRGS-2_d5cc57ed0825f4a24a835bc778e59314 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/182146 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2018-09-18T02:30:24Z20181029-8479http://hdl.handle.net/10183/182146001073286A search for a new scalar resonance decaying to a pair of Z bosons is performed in the mass range from 130 GeV to 3TeV, and for various width scenarios. The analysis is based on proton-proton collisions recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb1 at a center-of-mass energy of 13TeV. The Z boson pair decays are reconstructed using the 4`, 2`2q, and 2`2 nal states, where ` = e or . Both gluon fusion and electroweak production of the scalar resonance are considered, with a free parameter describing their relative cross sections. A dedicated categorization of events, based on the kinematic properties of associated jets, and matrix element techniques are employed for an optimal signal and background separation. A description of the interference between signal and background amplitudes for a resonance of an arbitrary width is included. No signi cant excess of events with respect to the standard model expectation is observed and limits are set on the product of the cross section for a new scalar boson and the branching fraction for its decay to ZZ for a large range of masses and widths.application/pdfengThe journal of high energy physics. Trieste. No. 6 (June 2018), 127, 53 p.Bosons ZAceleradores de partículasColisões proton-protonMétodo de Monte CarloHadron-Hadron scattering (experiments)Higgs physicsSearch for a new scalar resonance decaying to a pair of Z bosons 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:UFRGSTEXT001073286.pdf.txt001073286.pdf.txtExtracted Texttext/plain146769http://www.lume.ufrgs.br/bitstream/10183/182146/3/001073286.pdf.txt7d0dce90bbc2f06939baf5fd1f0c1b52MD53001073286-02.pdf.txt001073286-02.pdf.txtExtracted Texttext/plain47221http://www.lume.ufrgs.br/bitstream/10183/182146/4/001073286-02.pdf.txtf8bbeab7b7d4b3ab6ef2e848c047f21bMD54ORIGINAL001073286.pdfTexto completo (inglês)application/pdf2763836http://www.lume.ufrgs.br/bitstream/10183/182146/1/001073286.pdf06878af0b423dc8a64ba262de2929adaMD51001073286-02.pdfErrataapplication/pdf230882http://www.lume.ufrgs.br/bitstream/10183/182146/2/001073286-02.pdf84b568d9739e060fa4fffc774f32e447MD5210183/1821462023-08-05 03:38:11.682074oai:www.lume.ufrgs.br:10183/182146Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-05T06:38:11Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV |
title |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV |
spellingShingle |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV Sirunyan, A. M. Bosons Z Aceleradores de partículas Colisões proton-proton Método de Monte Carlo Hadron-Hadron scattering (experiments) Higgs physics |
title_short |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV |
title_full |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV |
title_fullStr |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV |
title_full_unstemmed |
Search for a new scalar resonance decaying to a pair of Z bosons in proton-proton collisions at √s = 13 TeV |
title_sort |
Search for a new scalar resonance decaying to a pair of Z bosons 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 |
Bosons Z Aceleradores de partículas Colisões proton-proton Método de Monte Carlo |
topic |
Bosons Z Aceleradores de partículas Colisões proton-proton Método de Monte Carlo Hadron-Hadron scattering (experiments) Higgs physics |
dc.subject.eng.fl_str_mv |
Hadron-Hadron scattering (experiments) Higgs physics |
description |
A search for a new scalar resonance decaying to a pair of Z bosons is performed in the mass range from 130 GeV to 3TeV, and for various width scenarios. The analysis is based on proton-proton collisions recorded by the CMS experiment at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb1 at a center-of-mass energy of 13TeV. The Z boson pair decays are reconstructed using the 4`, 2`2q, and 2`2 nal states, where ` = e or . Both gluon fusion and electroweak production of the scalar resonance are considered, with a free parameter describing their relative cross sections. A dedicated categorization of events, based on the kinematic properties of associated jets, and matrix element techniques are employed for an optimal signal and background separation. A description of the interference between signal and background amplitudes for a resonance of an arbitrary width is included. No signi cant excess of events with respect to the standard model expectation is observed and limits are set on the product of the cross section for a new scalar boson and the branching fraction for its decay to ZZ for a large range of masses and widths. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-09-18T02:30:24Z |
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/10183/182146 |
dc.identifier.issn.pt_BR.fl_str_mv |
1029-8479 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001073286 |
identifier_str_mv |
1029-8479 001073286 |
url |
http://hdl.handle.net/10183/182146 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The journal of high energy physics. Trieste. No. 6 (June 2018), 127, 53 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/10183/182146/3/001073286.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/182146/4/001073286-02.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/182146/1/001073286.pdf http://www.lume.ufrgs.br/bitstream/10183/182146/2/001073286-02.pdf |
bitstream.checksum.fl_str_mv |
7d0dce90bbc2f06939baf5fd1f0c1b52 f8bbeab7b7d4b3ab6ef2e848c047f21b 06878af0b423dc8a64ba262de2929ada 84b568d9739e060fa4fffc774f32e447 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 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_ |
1801224950512615424 |