TY - JOUR

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

AU - Chay, Junegone

N1 - Funding Information:
The author was supported in part by the Ministry of Education grants KRF-99-042-D00034 D2002, BSRI 98-2408, and the German–Korean scientific exchange program DFG-446-KOR-113/72/0. The author would like to thank Ahmed Ali, Christoph Greub, and Pyungwon Ko for stimulating discussions.

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

AN - SCOPUS:0034673502

VL - 476

SP - 339

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

ER -