GENXICC2.1: An Improved Version of GENXICC for Hadronic Production of Doubly Heavy Baryons

TL;DR

This paper introduces GENXICC2.1, an improved generator for simulating the hadronic production of doubly heavy baryons, enhancing efficiency, event generation, and compatibility with PYTHIA for further analysis.

Contribution

The paper presents an upgraded version of GENXICC with better unweighted event generation and standard LHE output for improved simulation of doubly heavy baryons.

Findings

More efficient unweighted event generation.

Addition of Les Houches Event (LHE) data output.

Compatibility with PYTHIA8.0 for hadronization and decay.

Abstract

We present an improved version of GENXICC, which is a generator for hadronic production of the doubly heavy baryons $\Xi_{cc}$, $\Xi_{bc}$ and $\Xi_{bb}$ and has been raised by C.H. Chang, J.X. Wang and X.G. Wu [Comput. Phys. Commun. 177 (2007) 467; Comput. Phys. Commun. 181 (2010) 1144]. In comparison with the previous GENXICC versions, we update the program in order to generate the unweighted baryon events more effectively under various simulation environments, whose distributions are now generated according to the probability proportional to the integrand. One Les Houches Event (LHE) common block has been added to produce a standard LHE data file that contains useful information of the doubly heavy baryon and its accompanying partons. Such LHE data can be conveniently imported into PYTHIA to do further hadronization and decay simulation, especially, the color-flow problem can be solved with PYTHIA8.0.