Add D02KKpipi with AMPGEN model v2
This is a modification of an existing decay file, where I've replaced the AMPGEN model by a newer one.
Local test yields a generator efficiency of 2/115 = 1.74%.
This is a modification of an existing decay file, where I've replaced the AMPGEN model by a newer one.
Local test yields a generator efficiency of 2/115 = 1.74%.