Abstract
We analyze the rare semileptonic , , and transitions probing the content of the and mesons via three-point QCD sum rules. We calculate responsible form factors for these transitions in full theory. Using the obtained form factors, we also estimate the related branching fractions and longitudinal lepton polarization asymmetries. Our results are in a good consistency with the predictions of the other existing nonperturbative approaches.
6 More- Received 18 August 2010
DOI:https://doi.org/10.1103/PhysRevD.82.116001
© 2010 The American Physical Society