wiki:FAQ-General-14

Version 1 (modified by omatt, 7 years ago) (diff)

--

===I have zero result Why? ===

Typical reasons are the following:

  1. A massive s-channel particle has a width set to zero.
  2. The pdf are zero for at least one of the initial state particles.
  3. The cuts are too strong.
  4. For decay computation the mass of the final state is larger than the mass of the initial state.

Please take a look at your Cards (param_card/ run_card)