Install libhepmcinterface8 by entering the following commands in the terminal:
sudo apt update sudo apt install libhepmcinterface8
Description:
HepMC interface for PYTHIA8 (obsolete)
PYTHIA is a program for the generation of high-energy physics events, i.e. for the description of collisions at high energies between elementary particles such as e+, e-, p and pbar in various combinations. It contains theory and models for a number of physics aspects, including hard and soft interactions, parton distributions, initial- and final-state parton showers, multiple interactions, fragmentation and decay. . This is a transitional dummy package, HepMC interface has been moved into the package 'libpythia8'.
Homepage: http://home.thep.lu.se/~torbjorn/Pythia.html
Version: 8.1.86-1.2
Section: universe/libs