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CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays

In left-right models the gluonic penguin contribution to b --> s s-bar s transition is enhanced by m_t/m_b due to the presence of (V+A) currents and by the larger values of loop functions than in the Standard Model. Together those may completely overcome the suppression due to small left-right mi...

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Autor principal: Raidal, Martti
Lenguaje:eng
Publicado: 2002
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.89.231803
http://cds.cern.ch/record/575804
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author Raidal, Martti
author_facet Raidal, Martti
author_sort Raidal, Martti
collection CERN
description In left-right models the gluonic penguin contribution to b --> s s-bar s transition is enhanced by m_t/m_b due to the presence of (V+A) currents and by the larger values of loop functions than in the Standard Model. Together those may completely overcome the suppression due to small left-right mixing angle xi <~ 0.013. Two independent new phases in the B --> phi K_S decay amplitude appearing in a large class of left-right models may therefore modify the time dependent CP asymmetry in this decay mode by O(1) and explain the recent BaBar and Belle CP asymmetry measurements in this channel. This new physics scenario implies observable deviations from the Standard Model also in B_s decays which could be measured at upcoming Tevatron and LHC.
id cern-575804
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-5758042023-03-14T18:07:39Zdoi:10.1103/PhysRevLett.89.231803http://cds.cern.ch/record/575804engRaidal, MarttiCP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decaysParticle Physics - PhenomenologyIn left-right models the gluonic penguin contribution to b --> s s-bar s transition is enhanced by m_t/m_b due to the presence of (V+A) currents and by the larger values of loop functions than in the Standard Model. Together those may completely overcome the suppression due to small left-right mixing angle xi <~ 0.013. Two independent new phases in the B --> phi K_S decay amplitude appearing in a large class of left-right models may therefore modify the time dependent CP asymmetry in this decay mode by O(1) and explain the recent BaBar and Belle CP asymmetry measurements in this channel. This new physics scenario implies observable deviations from the Standard Model also in B_s decays which could be measured at upcoming Tevatron and LHC.In left-right models the gluonic penguin contribution to b --> s s-bar s transition is enhanced by m_t/m_b due to the presence of (V+A) currents and by the larger values of loop functions than in the Standard Model. Together those may completely overcome the suppression due to small left-right mixing angle xi <~ 0.013. Two independent new phases in the B --> phi K_S decay amplitude appearing in a large class of left-right models may therefore modify the time dependent CP asymmetry in this decay mode by O(1) and explain the recent BaBar and Belle CP asymmetry measurements in this channel. This new physics scenario implies observable deviations from the Standard Model also in B_s decays which could be measured at upcoming Tevatron and LHC.hep-ph/0208091CERN-TH-2002-182CERN-TH-2002-182oai:cds.cern.ch:5758042002-08-09
spellingShingle Particle Physics - Phenomenology
Raidal, Martti
CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays
title CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays
title_full CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays
title_fullStr CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays
title_full_unstemmed CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays
title_short CP asymmetry in B to $\phi$ K$_{s}$ decays in left-right models and its implications for B$_{s}$ decays
title_sort cp asymmetry in b to $\phi$ k$_{s}$ decays in left-right models and its implications for b$_{s}$ decays
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevLett.89.231803
http://cds.cern.ch/record/575804
work_keys_str_mv AT raidalmartti cpasymmetryinbtophiksdecaysinleftrightmodelsanditsimplicationsforbsdecays