Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays

The decays B -> D** pi, where D** is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum re...

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Detalles Bibliográficos
Autor principal: Neubert, M.
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(97)01384-1
http://cds.cern.ch/record/333828
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author Neubert, M.
author_facet Neubert, M.
author_sort Neubert, M.
collection CERN
description The decays B -> D** pi, where D** is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum recoil. It is pointed out that the current data on the branching ratio for the decay B^- -> D_2^*0 pi^- may pose a problem for theory. We predict that future, more accurate measurements of this branching ratio will find a value around 4 * 10^{-4}, a factor 5 lower than the current central value.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3338282023-03-31T03:08:45Zdoi:10.1016/S0370-2693(97)01384-1http://cds.cern.ch/record/333828engNeubert, M.Theoretical Analysis of $\overline{B} \to D^{**}\pi$ DecaysParticle Physics - PhenomenologyThe decays B -> D** pi, where D** is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum recoil. It is pointed out that the current data on the branching ratio for the decay B^- -> D_2^*0 pi^- may pose a problem for theory. We predict that future, more accurate measurements of this branching ratio will find a value around 4 * 10^{-4}, a factor 5 lower than the current central value.The decays B -> D^{**} pi, where D^{**} is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum recoil. It is pointed out that the current data on the branching ratio for the decay B^- -> D_2^{*0} pi^- may pose a problem for theory. We predict that future, more accurate measurements of this branching ratio will find a value B(B^- -> D_2^{*0} pi^-) = 4 * 10^{-4}, a factor 5 lower than the current central value.The decays B ̄ →D ∗∗ π , where D ∗∗ is a narrow p-wave charm resonance, are investigated in the context of a generalized factorization hypothesis, including the leading nonfactorizable corrections. The decay rates for these processes are related to the corresponding semileptonic rates at maximum recoil. It is pointed out that the current data on the branching ratio for the decay B − →D 2 ∗0 π − may pose a problem for theory. We predict that future, more accurate measurements of this branching ratio will find a value B (B − →D 2 ∗0 π − )≈4×10 −4 , a factor 5 lower than the current central value.hep-ph/9709327CERN-TH-97-240CERN-TH-97-240oai:cds.cern.ch:3338281997-09-15
spellingShingle Particle Physics - Phenomenology
Neubert, M.
Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays
title Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays
title_full Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays
title_fullStr Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays
title_full_unstemmed Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays
title_short Theoretical Analysis of $\overline{B} \to D^{**}\pi$ Decays
title_sort theoretical analysis of $\overline{b} \to d^{**}\pi$ decays
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(97)01384-1
http://cds.cern.ch/record/333828
work_keys_str_mv AT neubertm theoreticalanalysisofoverlinebtodpidecays

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