TY - JOUR

T1 - Three-scale factorization theorem and effective field theory

T2 - Analysis of nonleptonic heavy meson decays

AU - Chang, Chia Hung V.

AU - Li, Hsiang nan

PY - 1997

Y1 - 1997

N2 - We develop a perturbative QCD factorization theorem which is compatible with effective field theory. The factorization involves three scales: an infrared cutoff of order [Formula presented] a hard scale of the order of the [Formula presented] meson mass, and an ultraviolet cutoff of the order of the [Formula presented] boson mass. Our approach is renormalization-group invariant and moderates the scale-dependent problem in effective field theory. Employing this formalism with nonfactorizable contributions included, we clarify the controversy over the BSW parameters [Formula presented] for charm and bottom decays.

AB - We develop a perturbative QCD factorization theorem which is compatible with effective field theory. The factorization involves three scales: an infrared cutoff of order [Formula presented] a hard scale of the order of the [Formula presented] meson mass, and an ultraviolet cutoff of the order of the [Formula presented] boson mass. Our approach is renormalization-group invariant and moderates the scale-dependent problem in effective field theory. Employing this formalism with nonfactorizable contributions included, we clarify the controversy over the BSW parameters [Formula presented] for charm and bottom decays.

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U2 - 10.1103/PhysRevD.55.5577

DO - 10.1103/PhysRevD.55.5577

M3 - Article

AN - SCOPUS:0000205226

SN - 1550-7998

VL - 55

SP - 5577

EP - 5580

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 9

ER -