HELAC-Onia 2.0: An upgraded matrix-element and event generator for heavy quarkonium physics

Abstract
We present an upgraded version (denoted as version 2.0) of the program HELAC-Onia for the automated computation of heavy-quarkonium helicity amplitudes within non-relativistic QCD framework. The new code has been designed to include many new and useful features for practical phenomenological simulations. It is designed for job submissions under cluster environment for parallel computations via Python scripts. We have interfaced HELAC-Onia to the parton shower Monte Carlo programs Pythia 8...

Title of program: HELAC-Onia 2.0
Catalogue Id: AEPR_v2_0

Nature of problem
Heavy quarkonium production processes provide an important way to investigate QCD in its poorly known non-perturbative regime. Its production mechanism has been attracted extensive interests from the high-energy physics community in decades. The qualitative and quantitative description of heavy-quarkonium production requires complex perturbative computations for high-multiplicity processes in the framework of the well established non-relativistic effecitive theory, NRQCD, and reliable Monte Carl ...

Versions of this program held in the CPC repository in Mendeley Data
AEPR_v1_0; HELAC-Onia.; 10.1016/j.cpc.2013.05.023
AEPR_v2_0; HELAC-Onia 2.0; 10.1016/j.cpc.2015.09.011

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)