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1. If you want to use Pythia8, you can load the config file using this function. pythia8->set_config_file("phpythia8_DY.cfg") or pythia8->set_config_file("phpythia8_Jpsi.cfg");
depending on your
work.
2. In the configuration file, you can change the configuration based on your need. For example, you can set the mass cut at Pythia8 by putting this line: PhaseSpace:mHatMin = 4.0.
Generating Single or Multi muons from using the multi particle gun
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