A Bayesian view of the Higgs sector with higher dimensional operators
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/JHEP07(2013)065 http://hdl.handle.net/11449/76268 |
Resumo: | We investigate the possibilities of New Physics affecting the Standard Model (SM) Higgs sector. An effective Lagrangian with dimension-six operators is used to capture the effect of New Physics. We carry out a global Bayesian inference analysis, considering the recent LHC data set including all available correlations, as well as results from Tevatron. Trilinear gauge boson couplings and electroweak precision observables are also taken into account. The case of weak bosons tensorial couplings is closely examined and NLO QCD corrections are taken into account in the deviations we predict. We consider two scenarios, one where the coefficients of all the dimension-six operators are essentially unconstrained, and one where a certain subset is loop suppressed. In both scenarios, we find that large deviations from some of the SM Higgs couplings can still be present, assuming New Physics arising at 3 TeV. In particular, we find that a significantly reduced coupling of the Higgs to the top quark is possible and slightly favored by searches on Higgs production in association with top quark pairs. The total width of the Higgs boson is only weakly constrained and can vary between 0.7 and 2.7 times the Standard Model value within 95% Bayesian credible interval (BCI). We also observe sizeable effects induced by New Physics contributions to tensorial couplings. In particular, the Higgs boson decay width into Zγ can be enhanced by up to a factor 12 within 95% BCI. © 2013 SISSA. |
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Repositório Institucional da UNESP |
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A Bayesian view of the Higgs sector with higher dimensional operatorsBeyond Standard ModelHiggs PhysicsWe investigate the possibilities of New Physics affecting the Standard Model (SM) Higgs sector. An effective Lagrangian with dimension-six operators is used to capture the effect of New Physics. We carry out a global Bayesian inference analysis, considering the recent LHC data set including all available correlations, as well as results from Tevatron. Trilinear gauge boson couplings and electroweak precision observables are also taken into account. The case of weak bosons tensorial couplings is closely examined and NLO QCD corrections are taken into account in the deviations we predict. We consider two scenarios, one where the coefficients of all the dimension-six operators are essentially unconstrained, and one where a certain subset is loop suppressed. In both scenarios, we find that large deviations from some of the SM Higgs couplings can still be present, assuming New Physics arising at 3 TeV. In particular, we find that a significantly reduced coupling of the Higgs to the top quark is possible and slightly favored by searches on Higgs production in association with top quark pairs. The total width of the Higgs boson is only weakly constrained and can vary between 0.7 and 2.7 times the Standard Model value within 95% Bayesian credible interval (BCI). We also observe sizeable effects induced by New Physics contributions to tensorial couplings. In particular, the Higgs boson decay width into Zγ can be enhanced by up to a factor 12 within 95% BCI. © 2013 SISSA.Laboratoire de Physique Subatomique et de Cosmologie UJF Grenoble 1 INPG 53, Avenue des Martyrs, F-38026 GrenobleInternational Institute of Physics UFRN, Av. Odilon Gomes de Lima, 1722, Capim Macio, 59078-400 Natal RNCentre de Physique Théorique École Polytechnique and CNRS, F-91128 PalaiseauICTP South American Institute for Fundamental Research Instituto de Fisica Teorica Sao Paulo State University, Sao Paulo SP 01140-070ICTP South American Institute for Fundamental Research Instituto de Fisica Teorica Sao Paulo State University, Sao Paulo SP 01140-070INPG 53Universidade Federal do Rio Grande do Norte (UFRN)École Polytechnique and CNRSUniversidade Estadual Paulista (Unesp)Dumont, BerangerFichet, SylvainVon Gersdorff, Gero [UNESP]2014-05-27T11:30:09Z2014-05-27T11:30:09Z2013-08-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1007/JHEP07(2013)065Journal of High Energy Physics, v. 2013, n. 7, 2013.1126-67081029-8479http://hdl.handle.net/11449/7626810.1007/JHEP07(2013)065WOS:0003232026000652-s2.0-848813217172-s2.0-84881321717.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of High Energy Physics5.5411,2271,227info:eu-repo/semantics/openAccess2023-10-03T06:02:14Zoai:repositorio.unesp.br:11449/76268Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:50:48.195350Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A Bayesian view of the Higgs sector with higher dimensional operators |
title |
A Bayesian view of the Higgs sector with higher dimensional operators |
spellingShingle |
A Bayesian view of the Higgs sector with higher dimensional operators Dumont, Beranger Beyond Standard Model Higgs Physics |
title_short |
A Bayesian view of the Higgs sector with higher dimensional operators |
title_full |
A Bayesian view of the Higgs sector with higher dimensional operators |
title_fullStr |
A Bayesian view of the Higgs sector with higher dimensional operators |
title_full_unstemmed |
A Bayesian view of the Higgs sector with higher dimensional operators |
title_sort |
A Bayesian view of the Higgs sector with higher dimensional operators |
author |
Dumont, Beranger |
author_facet |
Dumont, Beranger Fichet, Sylvain Von Gersdorff, Gero [UNESP] |
author_role |
author |
author2 |
Fichet, Sylvain Von Gersdorff, Gero [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
INPG 53 Universidade Federal do Rio Grande do Norte (UFRN) École Polytechnique and CNRS Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Dumont, Beranger Fichet, Sylvain Von Gersdorff, Gero [UNESP] |
dc.subject.por.fl_str_mv |
Beyond Standard Model Higgs Physics |
topic |
Beyond Standard Model Higgs Physics |
description |
We investigate the possibilities of New Physics affecting the Standard Model (SM) Higgs sector. An effective Lagrangian with dimension-six operators is used to capture the effect of New Physics. We carry out a global Bayesian inference analysis, considering the recent LHC data set including all available correlations, as well as results from Tevatron. Trilinear gauge boson couplings and electroweak precision observables are also taken into account. The case of weak bosons tensorial couplings is closely examined and NLO QCD corrections are taken into account in the deviations we predict. We consider two scenarios, one where the coefficients of all the dimension-six operators are essentially unconstrained, and one where a certain subset is loop suppressed. In both scenarios, we find that large deviations from some of the SM Higgs couplings can still be present, assuming New Physics arising at 3 TeV. In particular, we find that a significantly reduced coupling of the Higgs to the top quark is possible and slightly favored by searches on Higgs production in association with top quark pairs. The total width of the Higgs boson is only weakly constrained and can vary between 0.7 and 2.7 times the Standard Model value within 95% Bayesian credible interval (BCI). We also observe sizeable effects induced by New Physics contributions to tensorial couplings. In particular, the Higgs boson decay width into Zγ can be enhanced by up to a factor 12 within 95% BCI. © 2013 SISSA. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-08-15 2014-05-27T11:30:09Z 2014-05-27T11:30:09Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/JHEP07(2013)065 Journal of High Energy Physics, v. 2013, n. 7, 2013. 1126-6708 1029-8479 http://hdl.handle.net/11449/76268 10.1007/JHEP07(2013)065 WOS:000323202600065 2-s2.0-84881321717 2-s2.0-84881321717.pdf |
url |
http://dx.doi.org/10.1007/JHEP07(2013)065 http://hdl.handle.net/11449/76268 |
identifier_str_mv |
Journal of High Energy Physics, v. 2013, n. 7, 2013. 1126-6708 1029-8479 10.1007/JHEP07(2013)065 WOS:000323202600065 2-s2.0-84881321717 2-s2.0-84881321717.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of High Energy Physics 5.541 1,227 1,227 |
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 |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128282899513344 |