Study of light-cone distribution amplitudes for p-wave heavy mesons

TL;DR

This paper investigates the properties of light-cone distribution amplitudes for p-wave heavy mesons using the light-front approach, providing calculations of decay constants and moments that support heavy quark symmetry.

Contribution

It introduces a detailed formulation of leading twist light-cone distribution amplitudes for p-wave heavy mesons within the light-front framework, including decay constants and their relations in the heavy quark limit.

Findings

Decay constants calculated and compared with other models.

Distribution amplitudes' moments estimated and plotted.

Results support heavy quark symmetry principles.

Abstract

In this paper, a study of light-cone distribution amplitudes for p-wave heavy mesons is presented in both general and heavy quark frameworks. Within the light-front approach, the leading twist light-cone distribution amplitudes, \phi_M(u) and their relevant decay constants of heavy scalar, axial-vector and tensor mesons, f_M, are formulated. The relations of some decay constants can be simplified when the heavy quark limit is taken into account. After fixing the parameters which appear in a Gaussian wave function, the corresponding decay constants are calculated and compared with those of other theoretical approaches. The curves and the first six \xi moments of \phi_M(u) are plotted and estimated. These results all endorse the requirements of heavy quark symmetry.