1 #include "isajet/pilot.h"
2 REAL*8 FUNCTION ZJJ5(P1, P2, P3, P4, P5,NHEL,IM1,IM2)
4 C Function generated by Madgraph
5 C Returns amplitude squared summed/avg over colors
6 C for the point in phase space p1,p2,p3,p4,...
7 C and helicity NHEL(1),NHEL(2),....
9 C for process : q(im1) q(im2) -> z q(im1) q(im2)
12 #if defined(CERNLIB_IMPNONE)
18 INTEGER NGRAPHS, NEIGEN, NEXTERNAL
19 PARAMETER (NGRAPHS= 4,NEIGEN= 1,NEXTERNAL=5)
25 REAL*8 P1(0:3),P2(0:3),P3(0:3),P4(0:3),P5(0:3)
26 INTEGER NHEL(NEXTERNAL)
32 REAL*8 EIGEN_VAL(NEIGEN), EIGEN_VEC(NGRAPHS,NEIGEN)
34 COMPLEX*16 AMP(NGRAPHS)
35 COMPLEX*16 W1(6) , W2(6) , W3(6) , W4(6) , W5(6)
36 COMPLEX*16 W6(6) , W7(6) , W8(6) , W9(6) , W10(6)
37 COMPLEX*16 W11(6) , W12(6)
38 REAL*8 GZUD1(2),GZUD2(2)
42 #include "isajet/mgcoms.inc"
46 DATA EIGEN_VAL(1 )/ 8.8888888888888884D-01 /
47 DATA EIGEN_VEC(1 ,1 )/ -5.0000000000000000D-01 /
48 DATA EIGEN_VEC(2 ,1 )/ -5.0000000000000000D-01 /
49 DATA EIGEN_VEC(3 ,1 )/ -5.0000000000000000D-01 /
50 DATA EIGEN_VEC(4 ,1 )/ -5.0000000000000000D-01 /
54 IF(IM1.EQ.3.OR.IM1.EQ.7.OR.IM1.EQ.11) THEN
61 IF(IM2.EQ.3.OR.IM2.EQ.7.OR.IM2.EQ.11) THEN
69 CALL IXXXXX(P1 ,FMASS(IM1),NHEL(1 ), 1,W1 )
70 CALL IXXXXX(P2 ,FMASS(IM2),NHEL(2 ), 1,W2 )
71 CALL VXXXXX(P3 ,ZMASS,NHEL(3 ), 1,W3 )
72 CALL OXXXXX(P4 ,FMASS(IM1),NHEL(4 ), 1,W4 )
73 CALL OXXXXX(P5 ,FMASS(IM2),NHEL(5 ), 1,W5 )
74 CALL JIOXXX(W1 ,W4 ,GG,ZERO,ZERO,W6 )
75 CALL FVOXXX(W5 ,W3 ,GZUD2,FMASS(IM2),FWIDTH(IM2),W7 )
76 CALL IOVXXX(W2 ,W7 ,W6 ,GG,AMP(1 ))
77 CALL FVIXXX(W2 ,W3 ,GZUD2,FMASS(IM2),FWIDTH(IM2),W8 )
78 CALL IOVXXX(W8 ,W5 ,W6 ,GG,AMP(2 ))
79 CALL FVIXXX(W1 ,W3 ,GZUD1,FMASS(IM1),FWIDTH(IM1),W9 )
80 CALL JIOXXX(W9 ,W4 ,GG,ZERO,ZERO,W10 )
81 CALL IOVXXX(W2 ,W5 ,W10 ,GG,AMP(3 ))
82 CALL FVOXXX(W4 ,W3 ,GZUD1,FMASS(IM1),FWIDTH(IM1),W11 )
83 CALL JIOXXX(W2 ,W5 ,GG,ZERO,ZERO,W12 )
84 CALL IOVXXX(W1 ,W11 ,W12 ,GG,AMP(4 ))
89 ZTEMP = ZTEMP + EIGEN_VEC(J,I)*AMP(J)
91 ZJJ5 =ZJJ5+ZTEMP*EIGEN_VAL(I)*CONJG(ZTEMP)
93 C CALL GAUGECHECK(AMP,ZTEMP,EIGEN_VEC,EIGEN_VAL,NGRAPHS,NEIGEN)