Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays

The observation of a sizable CP asymmetry in the inclusive decays B -> Xs gamma would be a clean signal of New Physics. In the Standard Model, this asymmetry is below 1 % in magnitude. In extensions of the Standard Model with new CP-violating couplings, large asymmetries are possible without conf...

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Detalles Bibliográficos
Autor principal: Neubert, Matthias
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0920-5632(99)00175-9
http://cds.cern.ch/record/364828
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author Neubert, Matthias
author_facet Neubert, Matthias
author_sort Neubert, Matthias
collection CERN
description The observation of a sizable CP asymmetry in the inclusive decays B -> Xs gamma would be a clean signal of New Physics. In the Standard Model, this asymmetry is below 1 % in magnitude. In extensions of the Standard Model with new CP-violating couplings, large asymmetries are possible without conflicting with the experimental value of the B -> Xs gamma branching ratio. In particular, large asymmetries arise naturally in models with enhanced chromo-magnetic dipole transitions. Some generic examples of such models are explored and their implications for the semileptonic branching ratio and charm yield in B decays discussed.
id cern-364828
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3648282023-03-14T20:09:16Zdoi:10.1016/S0920-5632(99)00175-9http://cds.cern.ch/record/364828engNeubert, MatthiasLight Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ DecaysParticle Physics - PhenomenologyThe observation of a sizable CP asymmetry in the inclusive decays B -> Xs gamma would be a clean signal of New Physics. In the Standard Model, this asymmetry is below 1 % in magnitude. In extensions of the Standard Model with new CP-violating couplings, large asymmetries are possible without conflicting with the experimental value of the B -> Xs gamma branching ratio. In particular, large asymmetries arise naturally in models with enhanced chromo-magnetic dipole transitions. Some generic examples of such models are explored and their implications for the semileptonic branching ratio and charm yield in B decays discussed.The observation of a sizable CP asymmetry in the inclusive decays B -> Xs gamma would be a clean signal of New Physics. In the Standard Model, this asymmetry is below 1 % in magnitude. In extensions of the Standard Model with new CP-violating couplings, large asymmetries are possible without conflicting with the experimental value of the B -> Xs gamma branching ratio. In particular, large asymmetries arise naturally in models with enhanced chromo-magnetic dipole transitions. Some generic examples of such models are explored and their implications for the semileptonic branching ratio and charm yield in B decays discussed.hep-ph/9809343CERN-TH-98-300CERN-TH-98-300oai:cds.cern.ch:3648281998-09-14
spellingShingle Particle Physics - Phenomenology
Neubert, Matthias
Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays
title Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays
title_full Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays
title_fullStr Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays
title_full_unstemmed Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays
title_short Light Rays of New Physics: CP Violation in $B \to X_{s} \gamma$ Decays
title_sort light rays of new physics: cp violation in $b \to x_{s} \gamma$ decays
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0920-5632(99)00175-9
http://cds.cern.ch/record/364828
work_keys_str_mv AT neubertmatthias lightraysofnewphysicscpviolationinbtoxsgammadecays

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