QCD Aspects of Exclusive B Decays
Abstract
Exclusive B decays can be factorized as convolutions of hard scattering amplitudes involving the weak interaction with universal hadron distribution amplitudes, thus providing a new QCD-based phenomenology. In addition, semi-leptonic decay amplitudes can be computed exactly in terms of the diagonal and off-diagonal overlap of hadronic light-cone wavefunctions. I review these formalisms and the essential QCD ingredients. canonical form of the light-cone wavefunctions, valid at low values of the transverse momenta, is presented. The existence of intrinsic charm Fock states in the B meson wavefunction can enhance the production of final states of B -decay with three charmed quarks, such as B --> J/psi D pi, as well as lead to the breakdown of the CKM hierarchy.
Keywords
Cite
@article{arxiv.hep-ph/0104153,
title = {QCD Aspects of Exclusive B Decays},
author = {Stanley J. Brodsky},
journal= {arXiv preprint arXiv:hep-ph/0104153},
year = {2016}
}
Comments
Invited talk presented at the 4th International Conference on B Physics and CP Violation (BCP4), Ago Town, Mie Prefecture, Japan, February 19-23, 2001