Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry

We compute the QCD next-to-leading order matching conditions of the (chromo)-magnetic operators relevant for B\to X_s \gamma in supersymmetric models with minimal flavour violation. The calculation is performed under the assumption that the charginos and one stop are lighter than all other squarks a...

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Detalles Bibliográficos
Autores principales: Ciuchini, Marco, Degrassi, G., Gambino, P., Giudice, G.F.
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0550-3213(98)00516-1
http://cds.cern.ch/record/356789
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author Ciuchini, Marco
Degrassi, G.
Gambino, P.
Giudice, G.F.
author_facet Ciuchini, Marco
Degrassi, G.
Gambino, P.
Giudice, G.F.
author_sort Ciuchini, Marco
collection CERN
description We compute the QCD next-to-leading order matching conditions of the (chromo)-magnetic operators relevant for B\to X_s \gamma in supersymmetric models with minimal flavour violation. The calculation is performed under the assumption that the charginos and one stop are lighter than all other squarks and the gluino. In the parameter region where a light charged Higgs boson is consistent with measurements of BR(B\to X_s \gamma), we find sizeable corrections to the Wilson coefficients. As a consequence, there is a significant reduction of the stop-chargino mass region
id cern-356789
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3567892023-03-14T20:36:26Zdoi:10.1016/S0550-3213(98)00516-1http://cds.cern.ch/record/356789engCiuchini, MarcoDegrassi, G.Gambino, P.Giudice, G.F.Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in SupersymmetryParticle Physics - PhenomenologyWe compute the QCD next-to-leading order matching conditions of the (chromo)-magnetic operators relevant for B\to X_s \gamma in supersymmetric models with minimal flavour violation. The calculation is performed under the assumption that the charginos and one stop are lighter than all other squarks and the gluino. In the parameter region where a light charged Higgs boson is consistent with measurements of BR(B\to X_s \gamma), we find sizeable corrections to the Wilson coefficients. As a consequence, there is a significant reduction of the stop-chargino mass regionWe compute the QCD next-to-leading order matching conditions of the (chromo)-magnetic operators relevant for B\to X_s \gamma in supersymmetric models with minimal flavour violation. The calculation is performed under the assumption that the charginos and one stop are lighter than all other squarks and the gluino. In the parameter region where a light charged Higgs boson is consistent with measurements of BR(B\to X_s \gamma), we find sizeable corrections to the Wilson coefficients. As a consequence, there is a significant reduction of the stop-chargino mass region where the supersymmetric contribution has a large destructive interference with the charged-Higgs boson contribution.We compute the QCD next-to-leading order matching conditions of the (chromo)-magnetic operators relevant for B → X s γ in supersymmetric models with minimal flavour violation. The calculation is performed under the assumption that the charginos and one stop are lighter than all other squarks and the gluino. In the parameter region where a light charged Higgs boson is consistent with measurements of BR( B → X s γ ), we find sizeable corrections to the Wilson coefficients. As a consequence, there is a significant reduction of the stop-chargino mass region where the supersymmetric contribution has a large destructive interference with the charged-Higgs boson contribution.hep-ph/9806308CERN-TH-98-177DFPD-98-TH-25TUM-HEP-313-98CERN-TH-98-177DFPD-98-TH-25TUM-HEP-313oai:cds.cern.ch:3567891998-06-09
spellingShingle Particle Physics - Phenomenology
Ciuchini, Marco
Degrassi, G.
Gambino, P.
Giudice, G.F.
Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry
title Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry
title_full Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry
title_fullStr Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry
title_full_unstemmed Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry
title_short Next-to-Leading QCD Corrections to $B \to X_{s} \gamma $ in Supersymmetry
title_sort next-to-leading qcd corrections to $b \to x_{s} \gamma $ in supersymmetry
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0550-3213(98)00516-1
http://cds.cern.ch/record/356789
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AT degrassig nexttoleadingqcdcorrectionstobtoxsgammainsupersymmetry
AT gambinop nexttoleadingqcdcorrectionstobtoxsgammainsupersymmetry
AT giudicegf nexttoleadingqcdcorrectionstobtoxsgammainsupersymmetry

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