GENXICC2.0: An Upgraded Version of the Generator for Hadronic Production of Double Heavy Baryons $\Xi_{cc}$, $\Xi_{bc}$ and $\Xi_{bb}$

TL;DR

GENXICC2.0 is an upgraded event generator for simulating the hadronic production of double heavy baryons, now compatible with PYTHIA and featuring improved fragmentation modeling.

Contribution

The paper introduces GENXICC2.0, enhancing the previous version with PYTHIA integration and a new fragmentation subprogram for more accurate baryon production simulations.

Findings

Compatible with PYTHIA and GNU C compiler

Includes a new fragmentation subprogram

Enables full event simulation in various experimental setups

Abstract

An upgraded (second) version of the package GENXICC ({\bf A Generator for Hadronic Production of the Double Heavy Baryons $\Xi_{cc}$, $\Xi_{bc}$ and $\Xi_{bb}$ by C.H. Chang, J.X. Wang and X.G. Wu,} [its first version: in Comput. Phys. Commun. {\bf 177} (2007) 467-478]) is presented. Users, with this version being implemented in PYTHIA and a GNU C compiler, may simulate full events of the production in various experimental environments conveniently. In comparison with the previous version, in order to implement it in PYTHIA properly, a subprogram for the fragmentation of the produced double heavy diquark to the relevant baryon is complemented and the interphase of the generator to PYTHIA is changed accordingly. In the subprogram, with explanation, certain necessary assumptions (approximations) are made so as to conserve the momenta and the QCD `color' flow for the fragmentation.