Three-scale factorization theorem and effective field theory: Analysis of nonleptonic heavy meson decays

Chia Hung V. Chang, Hsiang nan Li

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5577-5580
Number of pages4
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume55
Issue number9
DOIs
Publication statusPublished - 1997 Jan 1

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factorization
mesons
theorems
decay
cut-off
bosons
quantum chromodynamics
formalism

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

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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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