Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?

The new angular analysis of the decay B→K*ℓ+ℓ- recently presented by the LHCb Collaboration still indicates some tensions with the Standard Model predictions. There are several ongoing analyses to solve the problem of separating hadronic and new physics effects in this decay, but the significance of...

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Detalles Bibliográficos
Autores principales: Hurth, T., Mahmoudi, F., Neshatpour, S.
Lenguaje:eng
Publicado: 2020
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.102.055001
http://cds.cern.ch/record/2723997
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author Hurth, T.
Mahmoudi, F.
Neshatpour, S.
author_facet Hurth, T.
Mahmoudi, F.
Neshatpour, S.
author_sort Hurth, T.
collection CERN
description The new angular analysis of the decay B→K*ℓ+ℓ- recently presented by the LHCb Collaboration still indicates some tensions with the Standard Model predictions. There are several ongoing analyses to solve the problem of separating hadronic and new physics effects in this decay, but the significance of the observed tensions in the angular observables in B→K*μ+μ- is still dependent on a theory guesstimate of the hadronic contributions to these decays. Using the new data from LHCb, we offer two tests which make a statistical comparison to determine whether the most favored explanation of the anomalies is new physics or underestimated hadronic effects. We then analyze the usefulness of these tests in two future scenarios. Finally, we update our global fits to all available b→s data and discuss the impact of the new LHCb measurements.
id cern-2723997
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
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spelling cern-27239972021-06-06T02:05:20Zdoi:10.1103/PhysRevD.102.055001http://cds.cern.ch/record/2723997engHurth, T.Mahmoudi, F.Neshatpour, S.Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?hep-phParticle Physics - PhenomenologyThe new angular analysis of the decay B→K*ℓ+ℓ- recently presented by the LHCb Collaboration still indicates some tensions with the Standard Model predictions. There are several ongoing analyses to solve the problem of separating hadronic and new physics effects in this decay, but the significance of the observed tensions in the angular observables in B→K*μ+μ- is still dependent on a theory guesstimate of the hadronic contributions to these decays. Using the new data from LHCb, we offer two tests which make a statistical comparison to determine whether the most favored explanation of the anomalies is new physics or underestimated hadronic effects. We then analyze the usefulness of these tests in two future scenarios. Finally, we update our global fits to all available b→s data and discuss the impact of the new LHCb measurements.The new angular analysis of the decay $B \to K^* \ell^+ \ell^-$ recently presented by the LHCb Collaboration still indicates some tensions with the Standard Model predictions. There are several ongoing analyses to solve the problem of separating hadronic and New Physics effects in this decay, but the significance of the observed tensions in the angular observables in $B \to K^* \mu^+\mu^-$ is still dependent on a theory guesstimate of the hadronic contributions to these decays. Using the new data from LHCb we offer two tests which make a statistical comparison to determine whether the most favoured explanation of the anomalies is New Physics or underestimated hadronic effects. We then analyse the usefulness of these tests in two future scenarios. Finally, we update our global fits to all available $b \to s $ data and discuss the impact of the new LHCb measurements.arXiv:2006.04213CERN-TH-2020-093MITP/20-030oai:cds.cern.ch:27239972020-06-07
spellingShingle hep-ph
Particle Physics - Phenomenology
Hurth, T.
Mahmoudi, F.
Neshatpour, S.
Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?
title Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?
title_full Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?
title_fullStr Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?
title_full_unstemmed Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?
title_short Implications of the new LHCb angular analysis of $B \to K^* \mu^+ \mu^-$ : Hadronic effects or new physics?
title_sort implications of the new lhcb angular analysis of $b \to k^* \mu^+ \mu^-$ : hadronic effects or new physics?
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.102.055001
http://cds.cern.ch/record/2723997
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AT mahmoudif implicationsofthenewlhcbangularanalysisofbtokmumuhadroniceffectsornewphysics
AT neshatpours implicationsofthenewlhcbangularanalysisofbtokmumuhadroniceffectsornewphysics

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