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On the LHCb anomaly in B -> K* l+ l-

The latest LHCb angular analysis of the rare decay B -> K* mu+ mu- shows some discrepancies from the SM up to the 3.7 sigma level. There is a consistent new physics explanation of these anomalies, while it is also reasonable that these anomalies are just statistical fluctuations and/or a direct c...

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Detalles Bibliográficos
Autores principales: Hurth, Tobias, Mahmoudi, Farvah
Lenguaje:eng
Publicado: 2013
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP04(2014)097
http://cds.cern.ch/record/1637906
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author Hurth, Tobias
Mahmoudi, Farvah
author_facet Hurth, Tobias
Mahmoudi, Farvah
author_sort Hurth, Tobias
collection CERN
description The latest LHCb angular analysis of the rare decay B -> K* mu+ mu- shows some discrepancies from the SM up to the 3.7 sigma level. There is a consistent new physics explanation of these anomalies, while it is also reasonable that these anomalies are just statistical fluctuations and/or a direct consequence of underestimated hadronic uncertainties. We briefly discuss possible cross-checks of the various hypotheses with an analysis of the inclusive B -> Xs l+ l- based on the data collected by the B factories Babar and Belle and also based on future opportunities at SuperBelle. We also present a global analysis of the latest LHCb data under the hypothesis of Minimal Flavour Violation. The latter is an important benchmark scenario for new physics models. Any measurements beyond the MFV bounds and relations unambiguously indicate the existence of new flavour structures next to the Yukawa couplings of the Standard Model. However, if new physics is responsible for these discrepancies, we show it is compatible with the MFV hypothesis, so no new flavour structures are needed. Moreover, we analyse the impact of the correlations between the observables based on a Monte Carlo study.
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language eng
publishDate 2013
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spelling cern-16379062022-08-10T21:10:47Zdoi:10.1007/JHEP04(2014)097http://cds.cern.ch/record/1637906engHurth, TobiasMahmoudi, FarvahOn the LHCb anomaly in B -> K* l+ l-Particle Physics - PhenomenologyThe latest LHCb angular analysis of the rare decay B -> K* mu+ mu- shows some discrepancies from the SM up to the 3.7 sigma level. There is a consistent new physics explanation of these anomalies, while it is also reasonable that these anomalies are just statistical fluctuations and/or a direct consequence of underestimated hadronic uncertainties. We briefly discuss possible cross-checks of the various hypotheses with an analysis of the inclusive B -> Xs l+ l- based on the data collected by the B factories Babar and Belle and also based on future opportunities at SuperBelle. We also present a global analysis of the latest LHCb data under the hypothesis of Minimal Flavour Violation. The latter is an important benchmark scenario for new physics models. Any measurements beyond the MFV bounds and relations unambiguously indicate the existence of new flavour structures next to the Yukawa couplings of the Standard Model. However, if new physics is responsible for these discrepancies, we show it is compatible with the MFV hypothesis, so no new flavour structures are needed. Moreover, we analyse the impact of the correlations between the observables based on a Monte Carlo study.The latest LHCb angular analysis of the rare decay B -> K* mu+ mu- shows some discrepancies from the SM up to the 3.7 sigma level. There is a consistent new physics explanation of these anomalies, while it is also reasonable that these anomalies are just statistical fluctuations and/or a direct consequence of underestimated hadronic uncertainties. We briefly discuss possible cross-checks of the various hypotheses with an analysis of the inclusive B -> Xs l+ l- based on the data collected by the B factories Babar and Belle and also based on future opportunities at SuperBelle. We also present a global analysis of the latest LHCb data under the hypothesis of Minimal Flavour Violation. The latter is an important benchmark scenario for new physics models. Any measurements beyond the MFV bounds and relations unambiguously indicate the existence of new flavour structures next to the Yukawa couplings of the Standard Model. However, if new physics is responsible for these discrepancies, we show it is compatible with the MFV hypothesis, so no new flavour structures are needed. Moreover, we analyse the impact of the correlations between the observables based on a Monte Carlo study.arXiv:1312.5267CERN-PH-TH-2013-256MITP-13-064CERN-PH-TH-2013-256MITP-13-064oai:cds.cern.ch:16379062013-12-18
spellingShingle Particle Physics - Phenomenology
Hurth, Tobias
Mahmoudi, Farvah
On the LHCb anomaly in B -> K* l+ l-
title On the LHCb anomaly in B -> K* l+ l-
title_full On the LHCb anomaly in B -> K* l+ l-
title_fullStr On the LHCb anomaly in B -> K* l+ l-
title_full_unstemmed On the LHCb anomaly in B -> K* l+ l-
title_short On the LHCb anomaly in B -> K* l+ l-
title_sort on the lhcb anomaly in b -> k* l+ l-
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP04(2014)097
http://cds.cern.ch/record/1637906
work_keys_str_mv AT hurthtobias onthelhcbanomalyinbkll
AT mahmoudifarvah onthelhcbanomalyinbkll