BR(Bs to mu+ mu-) as an electroweak precision test

Using an effective-theory approach, we analyze the impact of BR(Bs to mu+ mu-) in constraining new-physics models that predict modifications of the Z-boson couplings to down-type quarks. Under motivated assumptions about the flavor structure of the effective theory, we show that the bounds presently...

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Detalles Bibliográficos
Autores principales: Guadagnoli, Diego, Isidori, Gino
Lenguaje:eng
Publicado: 2013
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2013.05.054
http://cds.cern.ch/record/1517261
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author Guadagnoli, Diego
Isidori, Gino
author_facet Guadagnoli, Diego
Isidori, Gino
author_sort Guadagnoli, Diego
collection CERN
description Using an effective-theory approach, we analyze the impact of BR(Bs to mu+ mu-) in constraining new-physics models that predict modifications of the Z-boson couplings to down-type quarks. Under motivated assumptions about the flavor structure of the effective theory, we show that the bounds presently derived from BR(Bs to mu+ mu-) on the effective Z-boson couplings are comparable (in the case of minimal flavor violation) or significantly more stringent (in the case of generic partial compositeness) with respect to those derived from observables at the Z peak.
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institution Organización Europea para la Investigación Nuclear
language eng
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spelling cern-15172612021-10-16T02:37:33Zdoi:10.1016/j.physletb.2013.05.054http://cds.cern.ch/record/1517261engGuadagnoli, DiegoIsidori, GinoBR(Bs to mu+ mu-) as an electroweak precision testParticle Physics - PhenomenologyUsing an effective-theory approach, we analyze the impact of BR(Bs to mu+ mu-) in constraining new-physics models that predict modifications of the Z-boson couplings to down-type quarks. Under motivated assumptions about the flavor structure of the effective theory, we show that the bounds presently derived from BR(Bs to mu+ mu-) on the effective Z-boson couplings are comparable (in the case of minimal flavor violation) or significantly more stringent (in the case of generic partial compositeness) with respect to those derived from observables at the Z peak.Using an effective-theory approach, we analyze the impact of B(Bs→μ+μ−) in constraining new-physics models that predict modifications of the Z -boson couplings to down-type quarks. Under motivated assumptions about the flavor structure of the effective theory, we show that the bounds presently derived from B(Bs→μ+μ−) on the effective Z -boson couplings are comparable (in the case of minimal flavor violation) or significantly more stringent (in the case of generic partial compositeness) with respect to those derived from observables at the Z peak.Using an effective-theory approach, we analyze the impact of BR(Bs to mu+ mu-) in constraining new-physics models that predict modifications of the Z-boson couplings to down-type quarks. Under motivated assumptions about the flavor structure of the effective theory, we show that the bounds presently derived from BR(Bs to mu+ mu-) on the effective Z-boson couplings are comparable (in the case of minimal flavor violation) or significantly more stringent (in the case of generic partial compositeness) with respect to those derived from observables at the Z peak.arXiv:1302.3909LAPTH-010-13CERN-PH-TH-2013-028LAPTH-010-13CERN-PH-TH-2013-028oai:cds.cern.ch:15172612013-02-19
spellingShingle Particle Physics - Phenomenology
Guadagnoli, Diego
Isidori, Gino
BR(Bs to mu+ mu-) as an electroweak precision test
title BR(Bs to mu+ mu-) as an electroweak precision test
title_full BR(Bs to mu+ mu-) as an electroweak precision test
title_fullStr BR(Bs to mu+ mu-) as an electroweak precision test
title_full_unstemmed BR(Bs to mu+ mu-) as an electroweak precision test
title_short BR(Bs to mu+ mu-) as an electroweak precision test
title_sort br(bs to mu+ mu-) as an electroweak precision test
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2013.05.054
http://cds.cern.ch/record/1517261
work_keys_str_mv AT guadagnolidiego brbstomumuasanelectroweakprecisiontest
AT isidorigino brbstomumuasanelectroweakprecisiontest

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