Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality

We develop a systematic framework for exclusive rare B decays of the type B -> K(*)l+l- at large dilepton invariant mass q^2. It is based on an operator product expansion (OPE) for the required matrix elements of the nonleptonic weak Hamiltonian in this kinematic regime. Our treatment differs fro...

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Detalles Bibliográficos
Autores principales: Beylich, M, Buchalla, G, Feldmann, Th
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1140/epjc/s10052-011-1635-0
http://cds.cern.ch/record/1325024
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author Beylich, M
Buchalla, G
Feldmann, Th
author_facet Beylich, M
Buchalla, G
Feldmann, Th
author_sort Beylich, M
collection CERN
description We develop a systematic framework for exclusive rare B decays of the type B -> K(*)l+l- at large dilepton invariant mass q^2. It is based on an operator product expansion (OPE) for the required matrix elements of the nonleptonic weak Hamiltonian in this kinematic regime. Our treatment differs from previous work by a simplified operator basis, the explicit calculation of matrix elements of subleading operators, and by a quantitative estimate of duality violation. The latter point is discussed in detail, including the connection with the existence of an OPE and an illustration within a simple toy model.
id cern-1325024
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13250242019-09-30T06:29:59Zdoi:10.1140/epjc/s10052-011-1635-0http://cds.cern.ch/record/1325024engBeylich, MBuchalla, GFeldmann, ThTheory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron dualityParticle Physics - PhenomenologyWe develop a systematic framework for exclusive rare B decays of the type B -> K(*)l+l- at large dilepton invariant mass q^2. It is based on an operator product expansion (OPE) for the required matrix elements of the nonleptonic weak Hamiltonian in this kinematic regime. Our treatment differs from previous work by a simplified operator basis, the explicit calculation of matrix elements of subleading operators, and by a quantitative estimate of duality violation. The latter point is discussed in detail, including the connection with the existence of an OPE and an illustration within a simple toy model.arXiv:1101.5118CERN-PH-TH-2010-305oai:cds.cern.ch:13250242011-01-27
spellingShingle Particle Physics - Phenomenology
Beylich, M
Buchalla, G
Feldmann, Th
Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
title Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
title_full Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
title_fullStr Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
title_full_unstemmed Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
title_short Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
title_sort theory of b -> k(*)l+l- decays at high q^2: ope and quark-hadron duality
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1140/epjc/s10052-011-1635-0
http://cds.cern.ch/record/1325024
work_keys_str_mv AT beylichm theoryofbklldecaysathighq2opeandquarkhadronduality
AT buchallag theoryofbklldecaysathighq2opeandquarkhadronduality
AT feldmannth theoryofbklldecaysathighq2opeandquarkhadronduality

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