Monte Carlo Simulations of Hadronic Fragmentation Functions using NJL-Jet Model

TL;DR

This paper employs the NJL-Jet model to perform Monte Carlo simulations of hadronic fragmentation functions, including vector mesons and nucleon production, with NLO Q^2 evolution, comparing results to empirical data.

Contribution

It introduces a comprehensive Monte Carlo approach within the NJL-Jet model to calculate fragmentation functions, incorporating vector mesons, nucleon production, and NLO effects.

Findings

Results agree with empirical fragmentation functions

Vector mesons significantly influence secondary meson production

NLO effects improve the accuracy of the evolution of fragmentation functions

Abstract

The recently developed Nambu-Jona-Lasinio (NJL) - Jet model is used as an effective chiral quark theory to calculate the quark fragmentation functions to pions, kaons, nucleons, and antinucleons. The effects of the vector mesons rho, K* and phi on the production of secondary pions and kaons are included. The fragmentation processes to nucleons and antinucleons are described by using the quark-diquark picture, which has been shown to give a reasonable description of quark distribution functions. We incorporate effects of next-to-leading order (NLO) in the Q^2 evolution, and compare our results with the empirical fragmentation functions.