Light Cone Distribution Amplitudes of Excited P-Wave Heavy Quarkonia at the Leading Twist

TL;DR

This paper calculates the leading twist light cone distribution amplitudes for excited P-wave heavy quarkonia using quark model wavefunctions, aiding in hadronic amplitude calculations.

Contribution

It introduces a method to compute LCDAs for excited P-wave heavy quarkonia based on quark model wavefunctions, extending previous work.

Findings

Computed LCDAs for ground and excited P-wave charmonia and bottomonia.

Provided leptonic decay constants for these states.

Enhanced understanding of heavy quarkonium structure.

Abstract

Leading twist light cone distribution amplitudes (LCDAs) are key ingredients in calculating various hadronic amplitudes using light cone QCD sum rules. This work concentrates on calculating the leading twist LCDAs of P-wave heavy quarkonia. Quark model wavefunctions for the ground, first and second excited states of P-wave charmonia and bottomonia have been calculated, and are used for calculating the relevant LCDAs and leptonic decay constants.