Flavor-Singlet B-Decay Amplitudes in QCD Factorization
نویسندگان
چکیده
Exclusive hadronic B-meson decays into two-body final states consisting of a light pseudoscalar or vector meson along with an η or η meson are of great phenomenological interest. Their theoretical analysis involves decay mechanisms that are unique to flavor-singlet states, such as their coupling to gluons or their “intrinsic charm” content. These issues are studied systematically in the context of QCD factorization and the heavy-quark expansion. Theory can account for the experimental data on the B → K(∗)η(′) branching fractions, albeit within large uncertainties.
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تاریخ انتشار 2002