Flavor-Singlet B-Decay Amplitudes in QCD Factorization

Details Flavor-Singlet B-Decay Amplitudes in QCD Factorization Flavor-Singlet B-Decay Amplitudes in QCD Factorization

2002-10-04

arxiv.org/abs/hep-ph/0210085v1

Nucl.Phys.B651:225-248,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 5 figures

Scientific paper

10.1016/S0550-3213(02)01091-X

Exclusive hadronic B-meson decays into two-body final states consisting of a light pseudoscalar or vector meson along with an eta or eta' 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^{(*)} eta^{(')} branching fractions, albeit within large uncertainties.

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