Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators

We discuss the renormalization of local, scalar and pseudoscalar dimens= ion-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and thei=...

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Detalles Bibliográficos
Autores principales: Grozin, Andrey G., Neubert, Matthias
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0550-3213(97)00200-9
http://cds.cern.ch/record/318056
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author Grozin, Andrey G.
Neubert, Matthias
author_facet Grozin, Andrey G.
Neubert, Matthias
author_sort Grozin, Andrey G.
collection CERN
description We discuss the renormalization of local, scalar and pseudoscalar dimens= ion-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and thei= r mixing to one-loop order. We also perform the one-loop matching of gluon = and photon penguin operators onto operators of the HQET. We discuss applicati= ons of our results to the mixing of gluon and photon penguin operators at low renormalization scales, and to the calculation of $1/m_Q^2$ corrections t= o meson decays constants.
id cern-318056
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3180562023-03-12T06:03:41Zdoi:10.1016/S0550-3213(97)00200-9http://cds.cern.ch/record/318056engGrozin, Andrey G.Neubert, MatthiasHybrid Renormalization of Penguins and Dimension-5 Heavy-Light OperatorsParticle Physics - PhenomenologyWe discuss the renormalization of local, scalar and pseudoscalar dimens= ion-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and thei= r mixing to one-loop order. We also perform the one-loop matching of gluon = and photon penguin operators onto operators of the HQET. We discuss applicati= ons of our results to the mixing of gluon and photon penguin operators at low renormalization scales, and to the calculation of $1/m_Q^2$ corrections t= o meson decays constants.We discuss the renormalization of local, scalar and pseudoscalar dimension-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and their mixing to one-loop order. We also perform the one-loop matching of gluon and photon penguin operators onto operators of the HQET. We discuss applications of our results to the mixing of gluon and photon penguin operators at low renormalization scales, and to the calculation of $1/m_Q~2$ corrections to meson decays constants.We discuss the renormalization of local, scalar and pseudoscalar dimension-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and their mixing to one-loop order. We also perform the one-loop matching of gluon and photon penguin operators onto operators of the HQET. We discuss applications of our results to the mixing of gluon and photon penguin operators at low renormalization scales, and to the calculation of m Q 2 corrections to meson decays constants.We discuss the renormalization of local, scalar and pseudoscalar dimension-5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and their mixing to one-loop order. We also perform the one-loop matching of gluon and photon penguin operators onto operators of the HQET. We discuss applications of our results to the mixing of gluon and photon penguin operators at low renormalization scales, and to the calculation of $1/m_Q^2$ corrections to meson decays constants.hep-ph/9701262CERN-TH-96-238BUDKER-INP-1997-1BUDKER-INP-97-1CERN-TH-96-238BUDKER-INP-97-01oai:cds.cern.ch:3180561997-01-10
spellingShingle Particle Physics - Phenomenology
Grozin, Andrey G.
Neubert, Matthias
Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators
title Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators
title_full Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators
title_fullStr Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators
title_full_unstemmed Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators
title_short Hybrid Renormalization of Penguins and Dimension-5 Heavy-Light Operators
title_sort hybrid renormalization of penguins and dimension-5 heavy-light operators
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0550-3213(97)00200-9
http://cds.cern.ch/record/318056
work_keys_str_mv AT grozinandreyg hybridrenormalizationofpenguinsanddimension5heavylightoperators
AT neubertmatthias hybridrenormalizationofpenguinsanddimension5heavylightoperators

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