Speaker
Dr
Sébastien Descotes-Genon
(LPT Orsay (CNRS/Univ. Paris Sud 11))
Description
We study some properties of light-cone distribution amplitudes of B-mesons, which are a key ingredient for factorisation approaches for B-meson decays. We determine how two-parton distribution amplitudes mix with three-parton ones at one loop: \phi_+ is shown to mix only into itself, whereas \phi_- mixes with the difference of three-parton distribution amplitudes \Psi_A-\Psi_V. We determine the corresponding anomalous dimension and confirm some constraints on \phi_+ and \phi_- derived from the light-quark equation of motion. Finally, we comment on some implications of our result for phenomenological models of these distribution amplitudes.
Primary author
Dr
Sébastien Descotes-Genon
(LPT Orsay (CNRS/Univ. Paris Sud 11))
Co-author
Dr
Nils Offen
(LPT Orsay (CNRS/Univ. Paris Sud 11))
