Renormalization of B-meson distribution amplitudes

S. Descotes-Genon; N. Offen

arXiv:0904.4687·hep-ph·April 30, 2009

Renormalization of B-meson distribution amplitudes

S. Descotes-Genon, N. Offen

PDF

TL;DR

This paper presents a calculation of the evolution kernels for B-meson distribution amplitudes, including three-particle contributions, and confirms theoretical constraints, advancing understanding of B-meson structure in QCD.

Contribution

It provides the first calculation of the evolution kernel for the combination of three-particle distribution amplitudes and confirms existing theoretical constraints.

Findings

01

Calculated evolution kernels for $$ and $$ amplitudes

02

Derived the evolution kernel for $_A - _V$

03

Confirmed constraints from light-quark equations of motion

Abstract

We summarize a recent calculation of the evolution kernels of the two-particle B-meson distribution amplitudes $ϕ_{+}$ and $ϕ_{-}$ taking into account three-particle contributions. In addition to a few phenomenological comments, we give as a new result the evolution kernel of the combination of three-particle distribution amplitudes $Ψ_{A} - Ψ_{V}$ and confirm constraints on $ϕ_{+}$ and $ϕ_{-}$ derived from the light-quark equation of motion.

Peer Reviews

No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.

Videos

No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.