The HepMC3 event record library for Monte Carlo event generators

In high-energy physics, Monte Carlo event generators (MCEGs) are used to simulate the interactions of high energy particles. MCEG records store information on simulated particles and their relationships, thus reflect evolution physics phenomena in each collision event. We present HepMC3 library, a next-generation framework for record encoding manipulation, which builds functionality its widely-used predecessors enable more sophisticated algorithms event-record analysis. As compared previous versions, structure has been simplified, while adding possibility encode arbitrary information. The I/O extended support common input output formats various HEP MCEGs, including Fortran established by HepMC2 binary such as ROOT; custom or handlers may also be used. is already supported popular modern MCEGs can replace older HepMC versions many others. Program Title: 3 Files doi: http://dx.doi.org/10.17632/6fpf82rp8b.1 Licensing provisions: GPLv3 Programming language: C++ Nature problem: simulation elementary particle reactions at energies requires and/or modify related simulation. Solution method: Provide library that allows manipulation storage origins from simulations interfaced generator software well detector programs.