QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay

We calculate the O(\alpha_s) corrections to the charged Higgs mediated inclusive semi-tauonic B decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to t \to b H^+. Combining our result...

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Detalles Bibliográficos
Autores principales: Grossman, Yuval, Haber, Howard E., Nir, Yosef
Lenguaje:eng
Publicado: 1995
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(95)00946-I
http://cds.cern.ch/record/284259
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author Grossman, Yuval
Haber, Howard E.
Nir, Yosef
author_facet Grossman, Yuval
Haber, Howard E.
Nir, Yosef
author_sort Grossman, Yuval
collection CERN
description We calculate the O(\alpha_s) corrections to the charged Higgs mediated inclusive semi-tauonic B decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to t \to b H^+. Combining our results with O(1/m_b^2) corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent 2\sigma upper bound on the ratio of Higgs vacuum expectation values, \tan\beta<0.52(m_H/1 GeV).
id cern-284259
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1995
record_format invenio
spelling cern-2842592023-03-14T18:58:20Zdoi:10.1016/0370-2693(95)00946-Ihttp://cds.cern.ch/record/284259engGrossman, YuvalHaber, Howard E.Nir, YosefQCD corrections to charged Higgs-mediated b --> c$\tau\nu$decayParticle Physics - PhenomenologyWe calculate the O(\alpha_s) corrections to the charged Higgs mediated inclusive semi-tauonic B decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to t \to b H^+. Combining our results with O(1/m_b^2) corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent 2\sigma upper bound on the ratio of Higgs vacuum expectation values, \tan\beta<0.52(m_H/1 GeV).We calculate the O ( α s ) corrections to the charged Higgs mediated inclusive semi-tauonic B decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to t → bH + . Combining our results with O( 1 m b 2 ) corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent 2σ upper bound on the ratio of Higgs vacuum expectation values, tan β < 0.52( m H 1 GeV ) .We calculate the $O(\alpha_s)$ corrections to the charged Higgs mediated inclusive semi-tauonic $B$ decay. By working in the Landau gauge, we demonstrate how to obtain the charged Higgs contributions (both direct and interference terms) from the known QCD corrections to $t \to b H^+$. Combining our results with $O(1/m_b^2)$ corrections to the spectator model and comparing the theoretical prediction with the recent experimental measurements, we find a model-independent $2\sigma$ upper bound on the ratio of Higgs vacuum expectation values, $\tan\beta<0.52(m_H/1 GeV)$.hep-ph/9507213CERN-TH-95-182WIS-95-27-PHSCIPP-95-33CERN-TH-95-182SCIPP-95-33WIS-95-27-PHoai:cds.cern.ch:2842591995-07-03
spellingShingle Particle Physics - Phenomenology
Grossman, Yuval
Haber, Howard E.
Nir, Yosef
QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay
title QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay
title_full QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay
title_fullStr QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay
title_full_unstemmed QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay
title_short QCD corrections to charged Higgs-mediated b --> c$\tau\nu$decay
title_sort qcd corrections to charged higgs-mediated b --> c$\tau\nu$decay
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(95)00946-I
http://cds.cern.ch/record/284259
work_keys_str_mv AT grossmanyuval qcdcorrectionstochargedhiggsmediatedbctaunudecay
AT haberhowarde qcdcorrectionstochargedhiggsmediatedbctaunudecay
AT niryosef qcdcorrectionstochargedhiggsmediatedbctaunudecay

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