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pyrvr.f
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1 
2 C*********************************************************************
3 
4 C...PYRVR
5 C...Breit-Wigner for resonance contributions
6 
7  FUNCTION pyrvr(Mab2,RM,RW)
8 
9  IMPLICIT NONE
10  DOUBLE PRECISION mab2,rm,rw,pyrvr
11  pyrvr = 1d0/((mab2-rm**2)**2+rm**2*rw**2)
12  RETURN
13  END