TY - JOUR
T1 - Flavor-singlet B-decay amplitudes in QCD factorization
AU - Beneke, Martin
AU - Neubert, Matthias
N1 - Funding Information:
We are grateful to Thorsten Feldmann for important comments on the B→η (′) form factors and for careful reading of the manuscript, and to Peter Kroll and Kornelija Passek-Kumerički for communicating details on their work on the two-gluon distribution amplitude prior to publication. The research of M.B. is supported in part by the Bundesministerium für Bildung und Forschung, Project 05 HT1PAB/2. The research of M.N. is supported by the National Science Foundation under Grant PHY-0098631.
PY - 2003/2/24
Y1 - 2003/2/24
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0037463393&partnerID=8YFLogxK
U2 - 10.1016/S0550-3213(02)01091-X
DO - 10.1016/S0550-3213(02)01091-X
M3 - Article
AN - SCOPUS:0037463393
SN - 0550-3213
VL - 651
SP - 225
EP - 248
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 3
ER -