Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model

Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model

Abstract We investigate the new contributions to the parameters g L and g R of the Zb b ¯ $$ Zb\overline{b} $$ vertex in a multi-Higgs-doublet model (MHDM). We emphasize that those contributions generally worsen the fit of those parameters to the experimental data. We propose a solution to this prob...

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Bibliographic Details
Main Authors: Darius Jurčiukonis, Luís Lavoura
Format: Article
Language:English
Published: SpringerOpen 2021-07-01
Series:Journal of High Energy Physics
Subjects:
Phenomenological Models
Online Access:https://doi.org/10.1007/JHEP07(2021)195
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spelling doaj-a93bd54633794ba18cd9c2da157d8cd12021-08-01T11:45:34ZengSpringerOpenJournal of High Energy Physics1029-84792021-07-012021713010.1007/JHEP07(2021)195Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet modelDarius Jurčiukonis0Luís Lavoura1Vilnius University, Institute of Theoretical Physics and AstronomyUniversidade de Lisboa, Instituto Superior Técnico, CFTPAbstract We investigate the new contributions to the parameters g L and g R of the Zb b ¯ $$ Zb\overline{b} $$ vertex in a multi-Higgs-doublet model (MHDM). We emphasize that those contributions generally worsen the fit of those parameters to the experimental data. We propose a solution to this problem, wherein g R has the opposite sign from the one predicted by the Standard Model; this solution, though, necessitates light scalars and large Yukawa couplings in the MHDM.https://doi.org/10.1007/JHEP07(2021)195Phenomenological Models
collection DOAJ
language English
format Article
sources DOAJ
author Darius Jurčiukonis
Luís Lavoura
spellingShingle Darius Jurčiukonis
Luís Lavoura
Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
Journal of High Energy Physics
Phenomenological Models
author_facet Darius Jurčiukonis
Luís Lavoura
author_sort Darius Jurčiukonis
title Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
title_short Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
title_full Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
title_fullStr Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
title_full_unstemmed Fitting the Zb b ¯ $$ Zb\overline{b} $$ vertex in the two-Higgs-doublet model and in the three-Higgs-doublet model
title_sort fitting the zb b ¯ $$ zb\overline{b} $$ vertex in the two-higgs-doublet model and in the three-higgs-doublet model
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2021-07-01
description Abstract We investigate the new contributions to the parameters g L and g R of the Zb b ¯ $$ Zb\overline{b} $$ vertex in a multi-Higgs-doublet model (MHDM). We emphasize that those contributions generally worsen the fit of those parameters to the experimental data. We propose a solution to this problem, wherein g R has the opposite sign from the one predicted by the Standard Model; this solution, though, necessitates light scalars and large Yukawa couplings in the MHDM.
topic Phenomenological Models
url https://doi.org/10.1007/JHEP07(2021)195
work_keys_str_mv AT dariusjurciukonis fittingthezbbzboverlinebvertexinthetwohiggsdoubletmodelandinthethreehiggsdoubletmodel
AT luislavoura fittingthezbbzboverlinebvertexinthetwohiggsdoubletmodelandinthethreehiggsdoubletmodel
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