Light-Cone Distribution Amplitudes of the Ground State Bottom Baryons in HQET

TL;DR

This paper defines and analyzes the light-cone distribution amplitudes for ground state bottom baryons in the heavy quark effective theory, including their renormalization and scale dependence.

Contribution

It provides a complete set of LCDAs for bottom baryons, computes their moments using QCD sum rules, and models their scale dependence in the heavy quark limit.

Findings

Renormalization effects on twist-2 LCDAs are presented.

Moments of twist-2, 3, and 4 LCDAs are computed with QCD sum rules.

Models for distribution amplitudes include scale dependence.

Abstract

We provide the definition of the complete set of light-cone distribution amplitudes (LCDAs) for the ground state heavy bottom baryons with the spin-parities J^P = 1/2^+ and J^P = 3/2^+ in the heavy quark limit. We present the renormalization effects on the twist-2 light-cone distribution amplitudes and use the QCD sum rules to compute the moments of twist-2, twist-3, and twist-4 LCDAs. Simple models for the heavy baryon distribution amplitudes are analyzed with account of their scale dependence.