June 29, 2015 to July 3, 2015
Pisa
Europe/Rome timezone

SU(3) flavor breaking in baryon octet light-cone distribution amplitudes

Jul 2, 2015, 3:40 PM
20m
Room PS4 (Building E, Polo Fibonacci, Pisa)

Room PS4

Building E, Polo Fibonacci, Pisa

Talk Hadron Structure and Meson-Baryon Interaction Working Group Parallel Session 5 - Hadron Structure & Meson Baryon Interaction WG

Speaker

Philipp Wein (University of Regensburg)

Description

We present a leading one-loop calculation in the framework of three-flavor baryon chiral perturbation theory (BChPT) for three-quark light-cone distribution amplitudes, which parametrize the momentum distribution in the leading Fock state and are relevant for the description of hard exclusive processes. Such a calculation automatically yields model-independent results for the leading SU(3) flavor breaking effects. It is possible to find a minimal set of distribution amplitudes (DAs) that do not mix under chiral extrapolation towards the physical point and naturally embed the $\Lambda$ baryon. For the wave function normalization constants and for the first moments of the leading twist DA we will provide first results obtained from fits to preliminary lattice QCD data.

Primary author

Philipp Wein (University of Regensburg)

Presentation materials