Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-06-13
Nucl.Phys.B591:313-418,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
112 pages, LaTeX, 30 figures
Scientific paper
10.1016/S0550-3213(00)00559-9
We provide a rigorous basis for factorization for a large class of non-leptonic two-body $B$-meson decays in the heavy-quark limit. The factorization formula incorporates elements of the naive factorization approach and the hard-scattering approach, but allows us to compute systematically radiative (``non-factorizable'') corrections to naive factorization for decays such as $B\to D\pi$ and $B\to \pi \pi$. We discuss the factorization formula for a general final state from a general point of view. We then consider factorization for decays into heavy-light final states (such as $B\to D\pi$) in more detail, including a proof of the factorization formula at two-loop order. Explicit results for the leading QCD corrections to factorization are presented and compared to existing measurements of branching fractions and final-state interaction phases.
Beneke Martin
Buchalla Gerhard
Neubert Matthias
Sachrajda Chris T.
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