Open AccessHepMC3 Event Record Library for Monte Carlo Event Generators
Author(s) -
A. Verbytskyi,
A. G. Buckley,
D. Grellscheid,
D. Konstantinov,
J. Monk,
Leif Lönnblad,
T. Przedziński,
Witold Pokorski
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1525/1/012017
Subject(s) - event (particle physics) , computer science , successor cardinal , monte carlo method , fortran , event data , information retrieval , world wide web , programming language , mathematics , physics , statistics , mathematical analysis , quantum mechanics , information extraction
We present the HepMC3 library designed to perform manipulations with event records of High Energy Physics Monte Carlo Event Generators (MCEGs). The library is a natural successor of HepMC and HepMC2 libraries used in the present and in the past. HepMC3 supports all functionality of previous versions and significantly extends them. In comparison to the previous versions, the default event record has been simplified, while an option to add arbitrary information to the event record has been implemented. Particles and vertices are stored separately in an ordered graph structure, reflecting the evolution of a physics event and enabling usage of sophisticated algorithms for event record analysis. The I/O functionality of the library has been extended to support common input and output formats of HEP MCEGs, including formats used in Fortran HEP MCEGs, formats used in HepMC2 library and ROOT. The functionality of the library allows the user to implement a customised input or output format. The library is already supported by popular modern MCEGs (e.g. Sherpa and Pythia8) and can replace the older HepMC versions in many others.