#include "isajet/pilot.h" FUNCTION WZTU(T,U,T1,U1,T3,U3,P1,P2) C DECAY DISTRIBUTION FOR W- Z0 PAIRS FROM SCHOONSCHIP(1980). C ALL T AND U GRAPH TERMS. #include "isajet/itapes.inc" #include "isajet/wwpar.inc" DIMENSION P1(4),P2(4) #if defined(CERNLIB_DOUBLE) DOUBLE PRECISION WZTU DOUBLE PRECISION T,U,T1,U1,T3,U3,P1,P2 DOUBLE PRECISION WM4,ZM4,WZM2,CTXCT,CTXCU,CUXCU,EPF #endif WM4=WM2**2 ZM4=ZM2**2 WZM2=WM2*ZM2 CTXCT=CT**2/T**2 CTXCU=CT*CU/(T*U) CUXCU=CU**2/U**2 WZTU= 1 +CTXCT*CV3*(-128.*WM2*T1*T3**2-64.*WM2*T1*ZM4-64.*ZM2*T1**2*T3-6 1 4.*ZM2*T3*WM4-128.*T1*T3*WZM2-64.*T1**2*T3**2-32.*T1**2*ZM4-64.* 1 T3**2*WM4-32.*WM4*ZM4) WZTU=WZTU 1 +CTXCT*CV3*T*(64.*WM2*T1*T3-32.*WM2*U1*T3-64.*WM2*T3*S13+64.*WM2 1 *T3**2+32.*WM2*ZM4+64.*ZM2*T1*T3-32.*ZM2*T1*S13+32.*ZM2*T1**2+32 1 .*ZM2*WM4-32.*T1*U1*T3-64.*T1*T3*S13+64.*T1*T3**2+64.*T1*WZM2+32 1 .*T1*ZM4+32.*T1**2*T3+64.*T3*WZM2+32.*T3*WM4-32.*S13*WZM2) 1 +CTXCT*CV3*T**2*(-32.*WM2*T3+32.*WM2*S13-32.*ZM2*T1+32.*ZM2*S13- 1 32.*T1*T3+32.*T1*S13+32.*U1*T3+64.*T3*S13-32.*WZM2) WZTU=WZTU 1 +CTXCT*CV3*T**3*(-32.*S13) 1 +CTXCT*CA3*(64.*WM2*T1*ZM4+64.*ZM2*T1**2*T3+64.*ZM2*T3*WM4+128.* 1 T1*T3*WZM2+32.*T1**2*ZM4+32.*WM4*ZM4) 1 +CTXCT*CA3*T*(-64.*WM2*T1*T3-32.*WM2*U1*T3-32.*WM2*ZM4-64.*ZM2*T 1 1*T3+32.*ZM2*T1*S13-32.*ZM2*T1**2-32.*ZM2*WM4-32.*T1*U1*T3-64.*T 1 1*WZM2-32.*T1*ZM4-32.*T1**2*T3-64.*T3*WZM2-32.*T3*WM4+32.*S13*WZ 1 M2) WZTU=WZTU 1 +CTXCT*CA3*T**2*(32.*WM2*T3-32.*WM2*S13+32.*ZM2*T1-32.*ZM2*S13+3 1 2.*T1*T3-32.*T1*S13+32.*U1*T3+32.*WZM2) 1 +CTXCT*CA3*T**3*(32.*S13) WZTU=WZTU 1 +CTXCU*CV3*(32.*WM2*ZM2*WM4+32.*WM2*ZM2*ZM4+64.*WM2*T1*ZM4-128.* 1 WM2*U1*T3*U3+64.*WM2*T3*ZM4+64.*WM2*S13*ZM4-64.*ZM2*T1*U1*T3-64. 1 *ZM2*T1*U1*U3+64.*ZM2*T1*WM4+64.*ZM2*T3*WM4+64.*ZM2*S13*WM4-128. 1 *T1*U1*T3*U3+64.*T1*T3*WZM2+64.*T1*S13*WZM2+32.*T1**2*WZM2-64.*U 1 1*U3*WZM2+64.*U1*S13*WZM2+32.*U1**2*WZM2+128.*T3*S13*WZM2+64.*T3 1 **2*WZM2+64.*S13**2*WZM2+64.*WM4*ZM4) WZTU=WZTU 1 +CTXCU*CV3*T*(32.*WM2*U1*U3-64.*WM2*ZM4+32.*ZM2*U1*T3+32.*ZM2*U1 1 *U3-32.*ZM2*U1*S13-32.*ZM2*U1**2-64.*ZM2*WM4+32.*T1*U1*U3-64.*T1 1 *WZM2+64.*U1*T3*U3-64.*U1*U3*S13-32.*U1**2*U3-64.*T3*WZM2-64.*S1 1 3*WZM2) 1 +CTXCU*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) WZTU=WZTU 1 +CTXCU*CV3*T**2*(-32.*U1*U3+32.*WZM2) 1 +CTXCU*CV3*T**2*U*(32.*S13) 1 +CTXCU*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) WZTU=WZTU 1 +CTXCU*CA3*(-32.*WM2*ZM2*WM4-32.*WM2*ZM2*ZM4-64.*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*WM4-64.*ZM2*T3*WM4-64.*ZM2*S13*WM4-64.*T1*T3*WZM2-64.*T1 1 *S13*WZM2-32.*T1**2*WZM2+64.*U1*U3*WZM2+64.*U1*S13*WZM2+32.*U1** 1 2*WZM2-64.*WM4*ZM4) WZTU=WZTU 1 +CTXCU*CA3*T*(-32.*WM2*U1*U3+64.*WM2*ZM4+32.*ZM2*U1*T3-32.*ZM2*U 1 1*U3-32.*ZM2*U1*S13-32.*ZM2*U1**2+64.*ZM2*WM4-32.*T1*U1*U3+64.*T 1 1*WZM2-32.*U1**2*U3+64.*T3*WZM2+64.*S13*WZM2) 1 +CTXCU*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 +CTXCU*CA3*T**2*(32.*U1*U3-32.*WZM2) WZTU=WZTU 1 +CTXCU*CA3*T**2*U*(-32.*S13) 1 +CTXCU*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 +CUXCU*CV3*(-64.*ZM2*U1**2*U3-64.*U1**2*U3**2-32.*U1**2*ZM4) WZTU=WZTU 1 +CUXCU*CV3*T*U*(32.*U1*U3) 1 +CUXCU*CV3*U*(-32.*WM2*U1*U3-32.*ZM2*U1*T3-32.*ZM2*U1*U3-32.*ZM2 1 *U1*S13+32.*ZM2*U1**2-32.*T1*U1*U3-64.*U1*T3*U3-64.*U1*U3*S13+32 1 .*U1**2*U3) 1 +CUXCU*CV3*U**2*(32.*U1*T3+32.*U1*S13) 1 +CUXCU*CA3*(-64.*ZM2*U1**2*U3-32.*U1**2*ZM4) WZTU=WZTU 1 +CUXCU*CA3*T*U*(-32.*U1*U3) 1 +CUXCU*CA3*U*(32.*WM2*U1*U3-32.*ZM2*U1*T3+32.*ZM2*U1*U3-32.*ZM2* 1 U1*S13+32.*ZM2*U1**2+32.*T1*U1*U3+32.*U1**2*U3) 1 +CUXCU*CA3*U**2*(32.*U1*T3+32.*U1*S13) 1 +EPF(P1,P2,P3,Q1)*CTXCU*CV3*(-32.*ZM2*T1-16.*WZM2) 1 +EPF(P1,P2,P3,Q1)*CTXCU*CV3*T*(16.*ZM2) WZTU=WZTU 1 +EPF(P1,P2,P3,Q3)*CTXCU*CV3*(-48.*WM2*T1-16.*WM2*U1-32.*WM2*S13- 1 32.*T1*U1-64.*T1*S13-32.*T1**2-16.*WM4) 1 +EPF(P1,P2,P3,Q3)*CTXCU*CV3*T*(16.*WM2+16.*T1+16.*U1+32.*S13) 1 +EPF(P1,P2,Q1,Q3)*CTXCU*CV3*(-32.*WM2*T3-32.*WM2*U3-64.*ZM2*T1-6 1 4.*T1*T3-64.*T1*U3-32.*WZM2) 1 +EPF(P1,P2,Q1,Q3)*CTXCU*CV3*T*(16.*WM2+32.*ZM2+32.*T1+32.*T3+32. 1 *U3) WZTU=WZTU 1 -16.*EPF(P1,P2,Q1,Q3)*CTXCU*CV3*T*U 1 -16.*EPF(P1,P2,Q1,Q3)*CTXCU*CV3*T**2 1 +EPF(P1,P2,Q1,Q3)*CTXCU*CV3*U*(16.*WM2+32.*T1) 1 +EPF(P1,P3,Q1,Q3)*CTXCU*CV3*(32.*WM2*T3+32.*ZM2*T1+64.*T1*T3+16. 1 *WZM2) 1 +EPF(P1,P3,Q1,Q3)*CTXCU*CV3*T*(-16.*WM2-16.*ZM2-32.*T1-32.*T3) WZTU=WZTU 1 +16.*EPF(P1,P3,Q1,Q3)*CTXCU*CV3*T**2 1 +EPF(P2,P3,Q1,Q3)*CTXCU*CV3*(-32.*WM2*U3-32.*ZM2*T1-64.*T1*U3-16 1 .*WZM2) 1 +EPF(P2,P3,Q1,Q3)*CTXCU*CV3*T*(16.*ZM2+32.*U3) 1 -16.*EPF(P2,P3,Q1,Q3)*CTXCU*CV3*T*U 1 +EPF(P2,P3,Q1,Q3)*CTXCU*CV3*U*(16.*WM2+32.*T1)+0. RETURN END