B̄ → D((*))π- beyond naive factorization in the heavy quark limit

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Abstract

Nonleptonic decays B̄ → Dπ- or B̄ → D*π- are dominated by factorizable contributions. In the heavy quark limit, nonfactorizable contribution arises from strong radiative correction and power corrections in 1/m(b). I calculate the decay rates for B̄ → D(*)π- at next-to-leading order in strong interaction, including nonfactorizable corrections. The result is expressed in terms of a convolution of the hard scattering amplitude and the pion wave function. The decay amplitudes in this method are independent of the gauge, the renormalization scale, and the renormalization scheme. The effects of the nonfactorizable contribution are discussed and numerical estimates are presented. (C) 2000 Published by Elsevier Science B.V.

Original languageEnglish
Pages (from-to)339-343
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume476
Issue number3-4
DOIs
Publication statusPublished - 2000 Mar 16

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factorization
quarks
decay
convolution integrals
scattering amplitude
decay rates
pions
wave functions
estimates

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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title = "B̄ → D((*))π- beyond naive factorization in the heavy quark limit",
abstract = "Nonleptonic decays B̄ → Dπ- or B̄ → D*π- are dominated by factorizable contributions. In the heavy quark limit, nonfactorizable contribution arises from strong radiative correction and power corrections in 1/m(b). I calculate the decay rates for B̄ → D(*)π- at next-to-leading order in strong interaction, including nonfactorizable corrections. The result is expressed in terms of a convolution of the hard scattering amplitude and the pion wave function. The decay amplitudes in this method are independent of the gauge, the renormalization scale, and the renormalization scheme. The effects of the nonfactorizable contribution are discussed and numerical estimates are presented. (C) 2000 Published by Elsevier Science B.V.",
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TY - JOUR

T1 - B̄ → D((*))π- beyond naive factorization in the heavy quark limit

AU - Chay, Junegone

PY - 2000/3/16

Y1 - 2000/3/16

N2 - Nonleptonic decays B̄ → Dπ- or B̄ → D*π- are dominated by factorizable contributions. In the heavy quark limit, nonfactorizable contribution arises from strong radiative correction and power corrections in 1/m(b). I calculate the decay rates for B̄ → D(*)π- at next-to-leading order in strong interaction, including nonfactorizable corrections. The result is expressed in terms of a convolution of the hard scattering amplitude and the pion wave function. The decay amplitudes in this method are independent of the gauge, the renormalization scale, and the renormalization scheme. The effects of the nonfactorizable contribution are discussed and numerical estimates are presented. (C) 2000 Published by Elsevier Science B.V.

AB - Nonleptonic decays B̄ → Dπ- or B̄ → D*π- are dominated by factorizable contributions. In the heavy quark limit, nonfactorizable contribution arises from strong radiative correction and power corrections in 1/m(b). I calculate the decay rates for B̄ → D(*)π- at next-to-leading order in strong interaction, including nonfactorizable corrections. The result is expressed in terms of a convolution of the hard scattering amplitude and the pion wave function. The decay amplitudes in this method are independent of the gauge, the renormalization scale, and the renormalization scheme. The effects of the nonfactorizable contribution are discussed and numerical estimates are presented. (C) 2000 Published by Elsevier Science B.V.

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U2 - 10.1016/S0370-2693(00)00151-9

DO - 10.1016/S0370-2693(00)00151-9

M3 - Article

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EP - 343

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3-4

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