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 language | English |
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Pages (from-to) | 5577-5580 |
Number of pages | 4 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 55 |
Issue number | 9 |
DOIs | |
Publication status | Published - 1997 |
Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)