Perturbative fragmentation of vector colored particle into bound states with a heavy antiquark

TL;DR

This paper calculates the leading-order perturbative QCD fragmentation functions of a vector colored particle into bound states with a heavy antiquark, including evolution equations and transverse momentum distributions.

Contribution

It introduces one-loop evolution equations for fragmentation functions and analyzes the impact of anomalous chromomagnetic moments on fragmentation behavior.

Findings

Derived one-loop evolution equations for fragmentation functions.

Calculated transverse momentum distributions of bound states.

Provided integrated probabilities of fragmentation.

Abstract

The fragmentation function of vector particle into possible bound S-wave states with a heavy antiquark is calculated in the leading order of perturbative QCD for the high energy processes at large transverse momenta with the different behaviour of anomalous chromomagnetic moment. One-loop equations are derived for the evolution of fragmentation function moments, which is caused by the emission of hard gluons by the vector particle. The integrated probabilities of fragmentation are given. The distribution of bound state over the transverse momentum with respect to the axis of fragmentation is calculated in the scaling limit.