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File indexing completed on 2025-08-05 08:21:15

0001  
0002 C*********************************************************************
0003  
0004 C...PYRVR
0005 C...Breit-Wigner for resonance contributions
0006  
0007       FUNCTION PYRVR(Mab2,RM,RW)
0008  
0009       IMPLICIT NONE
0010       DOUBLE PRECISION Mab2,RM,RW,PYRVR
0011       PYRVR = 1D0/((Mab2-RM**2)**2+RM**2*RW**2)
0012       RETURN
0013       END