CP violating hW+W− coupling in the standard model and beyond
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/32651 |
Resumo: | Inspired by the recent development in determining the property of the observed Higgs boson, we explore the CP-violating (CPV) −CPVℎ+̃ −/ coupling in the Standard Model (SM) and beyond, where W±μν and ̃ ± denote the W-boson field strength and its dual. To begin with, we show that the leading-order SM contribution to this CPV vertex appears at two-loop level. By summing over the quark flavor indices in the two loop integrals analytically, we can estimate the order of the corresponding Wilson coefficient to be SMCPV∼(10−23), which is obviously too small to be probed at the LHC and planned future colliders. Then we investigate this CPV hW+W− interaction in two Beyond the Standard Model benchmark models: the left-right model and the complex 2-Higgs doublet model (C2HDM). Unlike what happens for the SM, the dominant contributions in both models arise at the one-loop level, and the corresponding Wilson coefficient can be as large as of (10−9) in the former model and of (10−3) for the latter. In light of such a large CPV effect in the hW+W− coupling, we also give the formulae for the leading one-loop contribution to the related CPV hZZ effective operator in the complex 2-Higgs doublet model. The order of magnitude of the Wilson coefficients in the C2HDM may be within reach of the high-luminosity LHC or planned future colliders. |
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CP violating hW+W− coupling in the standard model and beyondBeyond standard modelCP violationInspired by the recent development in determining the property of the observed Higgs boson, we explore the CP-violating (CPV) −CPVℎ+̃ −/ coupling in the Standard Model (SM) and beyond, where W±μν and ̃ ± denote the W-boson field strength and its dual. To begin with, we show that the leading-order SM contribution to this CPV vertex appears at two-loop level. By summing over the quark flavor indices in the two loop integrals analytically, we can estimate the order of the corresponding Wilson coefficient to be SMCPV∼(10−23), which is obviously too small to be probed at the LHC and planned future colliders. Then we investigate this CPV hW+W− interaction in two Beyond the Standard Model benchmark models: the left-right model and the complex 2-Higgs doublet model (C2HDM). Unlike what happens for the SM, the dominant contributions in both models arise at the one-loop level, and the corresponding Wilson coefficient can be as large as of (10−9) in the former model and of (10−3) for the latter. In light of such a large CPV effect in the hW+W− coupling, we also give the formulae for the leading one-loop contribution to the related CPV hZZ effective operator in the complex 2-Higgs doublet model. The order of magnitude of the Wilson coefficients in the C2HDM may be within reach of the high-luminosity LHC or planned future colliders.Springer Verlag2021-11-24T11:56:00Z2021-01-01T00:00:00Z2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/32651eng1126-670810.1007/JHEP01(2021)168Huang, DaMorais, António P.Santos, Ruiinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:02:43Zoai:ria.ua.pt:10773/32651Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:04:10.690625Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
CP violating hW+W− coupling in the standard model and beyond |
title |
CP violating hW+W− coupling in the standard model and beyond |
spellingShingle |
CP violating hW+W− coupling in the standard model and beyond Huang, Da Beyond standard model CP violation |
title_short |
CP violating hW+W− coupling in the standard model and beyond |
title_full |
CP violating hW+W− coupling in the standard model and beyond |
title_fullStr |
CP violating hW+W− coupling in the standard model and beyond |
title_full_unstemmed |
CP violating hW+W− coupling in the standard model and beyond |
title_sort |
CP violating hW+W− coupling in the standard model and beyond |
author |
Huang, Da |
author_facet |
Huang, Da Morais, António P. Santos, Rui |
author_role |
author |
author2 |
Morais, António P. Santos, Rui |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Huang, Da Morais, António P. Santos, Rui |
dc.subject.por.fl_str_mv |
Beyond standard model CP violation |
topic |
Beyond standard model CP violation |
description |
Inspired by the recent development in determining the property of the observed Higgs boson, we explore the CP-violating (CPV) −CPVℎ+̃ −/ coupling in the Standard Model (SM) and beyond, where W±μν and ̃ ± denote the W-boson field strength and its dual. To begin with, we show that the leading-order SM contribution to this CPV vertex appears at two-loop level. By summing over the quark flavor indices in the two loop integrals analytically, we can estimate the order of the corresponding Wilson coefficient to be SMCPV∼(10−23), which is obviously too small to be probed at the LHC and planned future colliders. Then we investigate this CPV hW+W− interaction in two Beyond the Standard Model benchmark models: the left-right model and the complex 2-Higgs doublet model (C2HDM). Unlike what happens for the SM, the dominant contributions in both models arise at the one-loop level, and the corresponding Wilson coefficient can be as large as of (10−9) in the former model and of (10−3) for the latter. In light of such a large CPV effect in the hW+W− coupling, we also give the formulae for the leading one-loop contribution to the related CPV hZZ effective operator in the complex 2-Higgs doublet model. The order of magnitude of the Wilson coefficients in the C2HDM may be within reach of the high-luminosity LHC or planned future colliders. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-11-24T11:56:00Z 2021-01-01T00:00:00Z 2021 |
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://hdl.handle.net/10773/32651 |
url |
http://hdl.handle.net/10773/32651 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1126-6708 10.1007/JHEP01(2021)168 |
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.publisher.none.fl_str_mv |
Springer Verlag |
publisher.none.fl_str_mv |
Springer Verlag |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137697310179328 |