#include "isajet/pilot.h" FUNCTION WZST(T,U,T1,U1,T3,U3,P1,P2) C DECAY DISTRIBUTION FOR W- Z0 PAIRS FROM SCHOONSCHIP(1980). C INTERFERENCE OF S AND T GRAPHS. #include "isajet/itapes.inc" #include "isajet/wwpar.inc" DIMENSION P1(4),P2(4) #if defined(CERNLIB_DOUBLE) DOUBLE PRECISION WZST DOUBLE PRECISION T,U,T1,U1,T3,U3,P1,P2 DOUBLE PRECISION WM4,ZM4,WZM2,CSXCT,EPF #endif WM4=WM2**2 ZM4=ZM2**2 WZM2=WM2*ZM2 CSXCT=CS*CT/T WZST= 1 +CSXCT*CV3*(32.*WM2*ZM2*WM4+32.*WM2*ZM2*ZM4+256.*WM2*T1*T3**2+19 1 2.*WM2*T1*ZM4-128.*WM2*U1*T3*U3+64.*WM2*T3*ZM4+64.*WM2*S13*ZM4-6 1 4.*ZM2*T1*U1*T3-64.*ZM2*T1*U1*U3+64.*ZM2*T1*WM4+128.*ZM2*T1**2*T 1 3+192.*ZM2*T3*WM4+64.*ZM2*S13*WM4-128.*T1*U1*T3*U3+320.*T1*T3*WZ 1 M2+64.*T1*S13*WZM2+128.*T1**2*T3**2+32.*T1**2*WZM2+64.*T1**2*ZM4 1 -64.*U1*U3*WZM2+64.*U1*S13*WZM2+32.*U1**2*WZM2+128.*T3*S13*WZM2+ 1 64.*T3**2*WZM2+128.*T3**2*WM4+64.*S13**2*WZM2+128.*WM4*ZM4) WZST=WZST 1 +CSXCT*CV3*T*(-128.*WM2*T1*T3+64.*WM2*U1*T3+32.*WM2*U1*U3+128.*W 1 M2*T3*S13-128.*WM2*T3**2-128.*WM2*ZM4-128.*ZM2*T1*T3+64.*ZM2*T1* 1 S13-64.*ZM2*T1**2+32.*ZM2*U1*T3+32.*ZM2*U1*U3-32.*ZM2*U1*S13-32. 1 *ZM2*U1**2-128.*ZM2*WM4+64.*T1*U1*T3+32.*T1*U1*U3+128.*T1*T3*S13 1 -128.*T1*T3**2-192.*T1*WZM2-64.*T1*ZM4-64.*T1**2*T3+64.*U1*T3*U3 1 -64.*U1*U3*S13-32.*U1**2*U3-192.*T3*WZM2-64.*T3*WM4) WZST=WZST 1 +CSXCT*CV3*T*U*(32.*WM2*T3-32.*WM2*S13+32.*ZM2*T1-32.*ZM2*S13+32 1 .*T1*T3-32.*T1*S13-64.*U1*T3-32.*U1*S13-64.*T3*S13-64.*S13**2+32 1 .*WZM2) 1 +CSXCT*CV3*T**2*(64.*WM2*T3-64.*WM2*S13+64.*ZM2*T1-64.*ZM2*S13+6 1 4.*T1*T3-64.*T1*S13-64.*U1*T3-32.*U1*U3-128.*T3*S13+96.*WZM2) 1 +CSXCT*CV3*T**2*U*(32.*S13) WZST=WZST 1 +CSXCT*CV3*T**3*(64.*S13) 1 +CSXCT*CV3*U*(-64.*WM2*T1*T3+32.*WM2*U1*T3-64.*WM2*T3*S13-64.*WM 1 2*T3**2-32.*WM2*ZM4-64.*ZM2*T1*T3-32.*ZM2*T1*S13-32.*ZM2*T1**2-3 1 2.*ZM2*WM4+32.*T1*U1*T3-64.*T1*T3*S13-64.*T1*T3**2-64.*T1*WZM2-3 1 2.*T1*ZM4-32.*T1**2*T3-64.*T3*WZM2-32.*T3*WM4-32.*S13*WZM2) WZST=WZST 1 +CSXCT*CA3*(-32.*WM2*ZM2*WM4-32.*WM2*ZM2*ZM4-192.*WM2*T1*ZM4-64. 1 *WM2*T3*ZM4-64.*WM2*S13*ZM4-64.*ZM2*T1*U1*T3+64.*ZM2*T1*U1*U3-64 1 .*ZM2*T1*WM4-128.*ZM2*T1**2*T3-192.*ZM2*T3*WM4-64.*ZM2*S13*WM4-3 1 20.*T1*T3*WZM2-64.*T1*S13*WZM2-32.*T1**2*WZM2-64.*T1**2*ZM4+64.* 1 U1*U3*WZM2+64.*U1*S13*WZM2+32.*U1**2*WZM2-128.*WM4*ZM4) WZST=WZST 1 +CSXCT*CA3*T*(128.*WM2*T1*T3+64.*WM2*U1*T3-32.*WM2*U1*U3+128.*WM 1 2*ZM4+128.*ZM2*T1*T3-64.*ZM2*T1*S13+64.*ZM2*T1**2+32.*ZM2*U1*T3- 1 32.*ZM2*U1*U3-32.*ZM2*U1*S13-32.*ZM2*U1**2+128.*ZM2*WM4+64.*T1*U 1 1*T3-32.*T1*U1*U3+192.*T1*WZM2+64.*T1*ZM4+64.*T1**2*T3-32.*U1**2 1 *U3+192.*T3*WZM2+64.*T3*WM4) WZST=WZST 1 +CSXCT*CA3*T*U*(-32.*WM2*T3+32.*WM2*S13-32.*ZM2*T1+32.*ZM2*S13-3 1 2.*T1*T3+32.*T1*S13-64.*U1*T3-32.*U1*S13-32.*WZM2) 1 +CSXCT*CA3*T**2*(-64.*WM2*T3+64.*WM2*S13-64.*ZM2*T1+64.*ZM2*S13- 1 64.*T1*T3+64.*T1*S13-64.*U1*T3+32.*U1*U3-96.*WZM2) 1 +CSXCT*CA3*T**2*U*(-32.*S13) 1 +CSXCT*CA3*T**3*(-64.*S13) WZST=WZST 1 +CSXCT*CA3*U*(64.*WM2*T1*T3+32.*WM2*U1*T3+32.*WM2*ZM4+64.*ZM2*T1 1 *T3+32.*ZM2*T1*S13+32.*ZM2*T1**2+32.*ZM2*WM4+32.*T1*U1*T3+64.*T1 1 *WZM2+32.*T1*ZM4+32.*T1**2*T3+64.*T3*WZM2+32.*T3*WM4+32.*S13*WZM 1 2) 1 +EPF(P1,P2,P3,Q1)*CSXCT*CV3*(64.*ZM2*T3+64.*ZM2*U3+64.*ZM2*S13+6 1 4.*T3*U3+64.*T3*S13+32.*T3**2+64.*U3*S13+32.*U3**2+32.*ZM4) WZST=WZST 1 +EPF(P1,P2,P3,Q1)*CSXCT*CV3*T*(-16.*ZM2-16.*T3-16.*U3-32.*S13) 1 +EPF(P1,P2,P3,Q1)*CSXCT*CV3*U*(-16.*ZM2-16.*T3-16.*U3-32.*S13) 1 +EPF(P1,P2,P3,Q3)*CSXCT*CV3*(32.*WM2*T3+32.*WM2*U3+32.*WZM2) 1 +EPF(P1,P2,P3,Q3)*CSXCT*CV3*T*(-16.*WM2) 1 +EPF(P1,P2,P3,Q3)*CSXCT*CV3*U*(-16.*WM2) 1 +EPF(P1,P3,Q1,Q3)*CSXCT*CV3*(32.*WM2*T3+32.*WM2*U3+64.*ZM2*U1+64 1 .*U1*T3+64.*U1*U3+32.*WZM2) WZST=WZST 1 +EPF(P1,P3,Q1,Q3)*CSXCT*CV3*T*(-16.*WM2-32.*U1) 1 +16.*EPF(P1,P3,Q1,Q3)*CSXCT*CV3*T*U 1 +EPF(P1,P3,Q1,Q3)*CSXCT*CV3*U*(-16.*WM2-32.*ZM2-32.*U1-32.*T3-32 1 .*U3) 1 +16.*EPF(P1,P3,Q1,Q3)*CSXCT*CV3*U**2 1 +EPF(P2,P3,Q1,Q3)*CSXCT*CV3*(-32.*WM2*T3-32.*WM2*U3-64.*ZM2*T1-6 1 4.*T1*T3-64.*T1*U3-32.*WZM2) WZST=WZST 1 +EPF(P2,P3,Q1,Q3)*CSXCT*CV3*T*(16.*WM2+32.*ZM2+32.*T1+32.*T3+32. 1 *U3) 1 -16.*EPF(P2,P3,Q1,Q3)*CSXCT*CV3*T*U 1 -16.*EPF(P2,P3,Q1,Q3)*CSXCT*CV3*T**2 1 +EPF(P2,P3,Q1,Q3)*CSXCT*CV3*U*(16.*WM2+32.*T1) RETURN END