Searching for new physics with B→Kπ decays

We propose a method to quantify the Standard Model uncertainty in B to K pi decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in the 1/mb expansion. Using this method, we show that present B to K pi data are compatible with the St...

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Detalles Bibliográficos
Autores principales: Ciuchini, M., Franco, E., Martinelli, G., Pierini, M., Silvestrini, L.
Lenguaje:eng
Publicado: 2008
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2009.03.011
http://cds.cern.ch/record/1137889
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author Ciuchini, M.
Franco, E.
Martinelli, G.
Pierini, M.
Silvestrini, L.
author_facet Ciuchini, M.
Franco, E.
Martinelli, G.
Pierini, M.
Silvestrini, L.
author_sort Ciuchini, M.
collection CERN
description We propose a method to quantify the Standard Model uncertainty in B to K pi decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in the 1/mb expansion. Using this method, we show that present B to K pi data are compatible with the Standard Model. We analyze the pattern of subleading terms required to reproduce the B to K pi data and argue that anomalously large subleading terms are not needed. Finally, we find that S(KS pi0) is fairly insensitive to hadronic uncertainties and obtain the Standard Model estimate S(KS pi0)=0.74 +- 0.04.
id cern-1137889
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
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spelling cern-11378892023-03-14T16:46:01Zdoi:10.1016/j.physletb.2009.03.011http://cds.cern.ch/record/1137889engCiuchini, M.Franco, E.Martinelli, G.Pierini, M.Silvestrini, L.Searching for new physics with B→Kπ decaysParticle Physics - PhenomenologyWe propose a method to quantify the Standard Model uncertainty in B to K pi decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in the 1/mb expansion. Using this method, we show that present B to K pi data are compatible with the Standard Model. We analyze the pattern of subleading terms required to reproduce the B to K pi data and argue that anomalously large subleading terms are not needed. Finally, we find that S(KS pi0) is fairly insensitive to hadronic uncertainties and obtain the Standard Model estimate S(KS pi0)=0.74 +- 0.04.We propose a method to quantify the Standard Model uncertainty in B→Kπ decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in the 1/mb expansion. Using this method, we show that present B→Kπ data are compatible with the Standard Model. We analyze the pattern of subleading terms required to reproduce the B→Kπ data and argue that anomalously large subleading terms are not needed. Finally, we find that SKSπ0 is fairly insensitive to hadronic uncertainties and obtain the Standard Model estimate SKSπ0=0.74±0.04 .We propose a method to quantify the Standard Model uncertainty in B to K pi decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in the 1/mb expansion. Using this method, we show that present B to K pi data are compatible with the Standard Model. We analyze the pattern of subleading terms required to reproduce the B to K pi data and argue that anomalously large subleading terms are not needed. Finally, we find that S(KS pi0) is fairly insensitive to hadronic uncertainties and obtain the Standard Model estimate S(KS pi0)=0.74 +- 0.04.arXiv:0811.0341oai:cds.cern.ch:11378892008-11-04
spellingShingle Particle Physics - Phenomenology
Ciuchini, M.
Franco, E.
Martinelli, G.
Pierini, M.
Silvestrini, L.
Searching for new physics with B→Kπ decays
title Searching for new physics with B→Kπ decays
title_full Searching for new physics with B→Kπ decays
title_fullStr Searching for new physics with B→Kπ decays
title_full_unstemmed Searching for new physics with B→Kπ decays
title_short Searching for new physics with B→Kπ decays
title_sort searching for new physics with b→kπ decays
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2009.03.011
http://cds.cern.ch/record/1137889
work_keys_str_mv AT ciuchinim searchingfornewphysicswithbkpdecays
AT francoe searchingfornewphysicswithbkpdecays
AT martinellig searchingfornewphysicswithbkpdecays
AT pierinim searchingfornewphysicswithbkpdecays
AT silvestrinil searchingfornewphysicswithbkpdecays

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