$B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing

We present a general analysis of B_{s,d}-> l^+ l^- and K_L -> l^+ l^- decays in supersymmetric models with non-minimal sources of flavour mixing. In spite of the existing constraints on off-diagonal squark mass terms, these modes could still receive sizeable corrections, mainly because of Higg...

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Detalles Bibliográficos
Autores principales: Isidori, Gino, Retico, Alessandra
Lenguaje:eng
Publicado: 2002
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2002/09/063
http://cds.cern.ch/record/576817
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author Isidori, Gino
Retico, Alessandra
author_facet Isidori, Gino
Retico, Alessandra
author_sort Isidori, Gino
collection CERN
description We present a general analysis of B_{s,d}-> l^+ l^- and K_L -> l^+ l^- decays in supersymmetric models with non-minimal sources of flavour mixing. In spite of the existing constraints on off-diagonal squark mass terms, these modes could still receive sizeable corrections, mainly because of Higgs-mediated FCNCs arising at large tan(beta). The severe limits on scenarios with large tan(beta) and non-negligible {tilde d}^i_{R(L)}-{d-tilde}^j_{R(L)} mixing imposed by the present experimental bounds on these modes and Delta B=2 observables are discussed in detail. In particular, we show that scalar-current contributions to K_L -> l^+ l^- and B-{bar B} mixing set non-trivial constraints on the possibility that B_s -> l^+ l^- and B_d -> l^+ l^- receive large corrections.
id cern-576817
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-5768172023-03-14T18:18:08Zdoi:10.1088/1126-6708/2002/09/063http://cds.cern.ch/record/576817engIsidori, GinoRetico, Alessandra$B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixingParticle Physics - PhenomenologyWe present a general analysis of B_{s,d}-> l^+ l^- and K_L -> l^+ l^- decays in supersymmetric models with non-minimal sources of flavour mixing. In spite of the existing constraints on off-diagonal squark mass terms, these modes could still receive sizeable corrections, mainly because of Higgs-mediated FCNCs arising at large tan(beta). The severe limits on scenarios with large tan(beta) and non-negligible {tilde d}^i_{R(L)}-{d-tilde}^j_{R(L)} mixing imposed by the present experimental bounds on these modes and Delta B=2 observables are discussed in detail. In particular, we show that scalar-current contributions to K_L -> l^+ l^- and B-{bar B} mixing set non-trivial constraints on the possibility that B_s -> l^+ l^- and B_d -> l^+ l^- receive large corrections.We present a general analysis of B_{s,d}-> l^+ l^- and K_L -> l^+ l^- decays in supersymmetric models with non-minimal sources of flavour mixing. In spite of the existing constraints on off-diagonal squark mass terms, these modes could still receive sizeable corrections, mainly because of Higgs-mediated FCNCs arising at large tan(beta). The severe limits on scenarios with large tan(beta) and non-negligible {tilde d}^i_{R(L)}-{d-tilde}^j_{R(L)} mixing imposed by the present experimental bounds on these modes and Delta B=2 observables are discussed in detail. In particular, we show that scalar-current contributions to K_L -> l^+ l^- and B-{bar B} mixing set non-trivial constraints on the possibility that B_s -> l^+ l^- and B_d -> l^+ l^- receive large corrections.hep-ph/0208159CERN-TH-2002-192CERN-TH-2002-192oai:cds.cern.ch:5768172002-08-16
spellingShingle Particle Physics - Phenomenology
Isidori, Gino
Retico, Alessandra
$B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing
title $B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing
title_full $B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing
title_fullStr $B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing
title_full_unstemmed $B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing
title_short $B_{s,d} \to l^{+}l^{-}$ and $K_{L} \to l^{+} l^{-}$ in SUSY models with non-minimal sources of flavour mixing
title_sort $b_{s,d} \to l^{+}l^{-}$ and $k_{l} \to l^{+} l^{-}$ in susy models with non-minimal sources of flavour mixing
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1126-6708/2002/09/063
http://cds.cern.ch/record/576817
work_keys_str_mv AT isidorigino bsdtollandkltollinsusymodelswithnonminimalsourcesofflavourmixing
AT reticoalessandra bsdtollandkltollinsusymodelswithnonminimalsourcesofflavourmixing

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