| 0795afa3 |
1 | #include "isajet/pilot.h" |
| 2 | FUNCTION WWST(T,U,T1,U1,T3,U3,P1,P2) |
| 3 | C DECAY DISTRIBUTION FOR W+ W- PAIRS FROM SCHOONSCHIP(1980). |
| 4 | C INTERFERENCE OF T AND S GRAPHS. |
| 5 | #include "isajet/itapes.inc" |
| 6 | #include "isajet/wwpar.inc" |
| 7 | DIMENSION P1(4),P2(4) |
| 8 | #if defined(CERNLIB_DOUBLE) |
| 9 | DOUBLE PRECISION WWST |
| 10 | DOUBLE PRECISION T,U,T1,U1,T3,U3,P1,P2 |
| 11 | DOUBLE PRECISION CVACQ,EPF |
| 12 | #endif |
| 13 | CVACQ=(CV+CA)*CQ |
| 14 | WWST= |
| 15 | 1 +CVACQ*(-256.*T1*U1*T3*U3+256.*T1**2*T3**2) |
| 16 | 1 +CVACQ*T*(256.*T1*U1*T3+256.*T1*T3*S13-256.*T1*T3**2+128.*U1*T3* |
| 17 | 1 U3-128.*U1*U3*S13-128.*U1**2*U3) |
| 18 | 1 +CVACQ*T*U*(-256.*U1*T3-128.*U1*S13-128.*T3*S13-128.*S13**2) |
| 19 | 1 +CVACQ*T*WM2*(384.*U1*T3-128.*U1*S13-128.*U1**2+256.*T3*S13-256. |
| 20 | 1 *T3**2) |
| 21 | 1 +CVACQ*T**2*(-256.*U1*T3-256.*T3*S13) |
| 22 | 1 +CVACQ*U*(128.*T1*U1*T3-128.*T1*T3*S13-128.*T1*T3**2) |
| 23 | WWST=WWST |
| 24 | 1 +CVACQ*U*WM2*(128.*U1*T3-128.*T3*S13-128.*T3**2) |
| 25 | 1 +CVACQ*WM2*(-256.*T1*U1*T3+512.*T1*T3**2-256.*U1*T3*U3) |
| 26 | 1 +CVACQ*WM2**2*(256.*U1*S13+128.*U1**2+256.*T3*S13+384.*T3**2+128 |
| 27 | 1 .*S13**2) |
| 28 | 1 +EPF(P1,P2,P3,Q1)*CVACQ*(128.*T3*U3+128.*T3*S13+64.*T3**2+128.*U |
| 29 | 1 3*S13+64.*U3**2) |
| 30 | 1 +EPF(P1,P2,P3,Q1)*CVACQ*T*(-32.*T3-32.*U3-64.*S13) |
| 31 | 1 -32.*EPF(P1,P2,P3,Q1)*CVACQ*T*WM2 |
| 32 | WWST=WWST |
| 33 | 1 +EPF(P1,P2,P3,Q1)*CVACQ*U*(-32.*T3-32.*U3-64.*S13) |
| 34 | 1 -32.*EPF(P1,P2,P3,Q1)*CVACQ*U*WM2 |
| 35 | 1 +EPF(P1,P2,P3,Q1)*CVACQ*WM2*(128.*T3+128.*U3+128.*S13) |
| 36 | 1 +64.*EPF(P1,P2,P3,Q1)*CVACQ*WM2**2 |
| 37 | 1 -32.*EPF(P1,P2,P3,Q3)*CVACQ*T*WM2 |
| 38 | 1 -32.*EPF(P1,P2,P3,Q3)*CVACQ*U*WM2 |
| 39 | 1 +EPF(P1,P2,P3,Q3)*CVACQ*WM2*(64.*T3+64.*U3) |
| 40 | 1 +64.*EPF(P1,P2,P3,Q3)*CVACQ*WM2**2 |
| 41 | WWST=WWST |
| 42 | 1 +EPF(P1,P3,Q1,Q3)*CVACQ*(128.*U1*T3+128.*U1*U3) |
| 43 | 1 +EPF(P1,P3,Q1,Q3)*CVACQ*T*(-64.*U1) |
| 44 | 1 +32.*EPF(P1,P3,Q1,Q3)*CVACQ*T*U |
| 45 | 1 -32.*EPF(P1,P3,Q1,Q3)*CVACQ*T*WM2 |
| 46 | 1 +EPF(P1,P3,Q1,Q3)*CVACQ*U*(-64.*U1-64.*T3-64.*U3) |
| 47 | 1 -96.*EPF(P1,P3,Q1,Q3)*CVACQ*U*WM2 |
| 48 | 1 +32.*EPF(P1,P3,Q1,Q3)*CVACQ*U**2 |
| 49 | 1 +EPF(P1,P3,Q1,Q3)*CVACQ*WM2*(128.*U1+64.*T3+64.*U3) |
| 50 | WWST=WWST |
| 51 | 1 +64.*EPF(P1,P3,Q1,Q3)*CVACQ*WM2**2 |
| 52 | 1 +EPF(P2,P3,Q1,Q3)*CVACQ*(-128.*T1*T3-128.*T1*U3) |
| 53 | 1 +EPF(P2,P3,Q1,Q3)*CVACQ*T*(64.*T1+64.*T3+64.*U3) |
| 54 | 1 -32.*EPF(P2,P3,Q1,Q3)*CVACQ*T*U |
| 55 | 1 +96.*EPF(P2,P3,Q1,Q3)*CVACQ*T*WM2 |
| 56 | 1 -32.*EPF(P2,P3,Q1,Q3)*CVACQ*T**2 |
| 57 | 1 +EPF(P2,P3,Q1,Q3)*CVACQ*U*(64.*T1) |
| 58 | 1 +32.*EPF(P2,P3,Q1,Q3)*CVACQ*U*WM2 |
| 59 | 1 +EPF(P2,P3,Q1,Q3)*CVACQ*WM2*(-128.*T1-64.*T3-64.*U3) |
| 60 | 1 -64.*EPF(P2,P3,Q1,Q3)*CVACQ*WM2**2 |
| 61 | WWST=WWST/T |
| 62 | WWST=2.*WWST |
| 63 | RETURN |
| 64 | END |
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