Exclusive event generator for $e^+e^-$ scan experiments

Understand

An exclusive event generator is designed for the $e^+e^-$ scan experiments with the initial state radiation effects up to the second order correction included.

• There are seventy hadronic decay modes available with the effective center-of-mass energy coverage from the two pion mass threshold up to about 6 GeV.
• The achieved accuracy of initial state radiation correction reaches the level the generator KKMC achieved.
• The uncertainty associated with the calculation of correction factor to the initial state radiation is dominated by the measurements of the energy-dependence Born cross section.