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Commit | Line | Data |
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0795afa3 | 1 | #include "isajet/pilot.h" |
2 | REAL FUNCTION SSZZF5(SP) | |
3 | C----------------------------------------------------------------------- | |
4 | C SSWZBF: ziss -> zjss f fbar | |
5 | C Drees' I26 integrand for higgs-sfermion interference | |
6 | C----------------------------------------------------------------------- | |
7 | #if defined(CERNLIB_IMPNONE) | |
8 | IMPLICIT NONE | |
9 | #endif | |
10 | #include "isajet/sssm.inc" | |
11 | #include "isajet/sspar.inc" | |
12 | #include "isajet/sstmp.inc" | |
13 | C | |
14 | REAL SP | |
15 | DOUBLE PRECISION S,M2,M1,MS,E,QS,MUS,BKT | |
16 | DOUBLE PRECISION THZ,TERM,MH,DFI,Q,MF,QP | |
17 | C | |
18 | M2=TMP(1) | |
19 | M1=TMP(2) | |
20 | MS=TMP(3) | |
21 | MH=TMP(5) | |
22 | THZ=TMP(4) | |
23 | MF=TMP(6) | |
24 | C | |
25 | S=SP | |
26 | E=(S+M2**2-M1**2)/2.D0/M2 | |
27 | QS=E**2-S | |
28 | Q=DSQRT(MAX(0.D0,QS)) | |
29 | QP=Q*DSQRT(MAX(0.D0,1.D0-4*MF**2/S)) | |
30 | MUS=MS**2+S-M1**2-MF**2 | |
31 | BKT=S*MS**2-MF**2*(M1**2+M2**2)+THZ*M1*M2*(S-2*MF**2) | |
32 | TERM=DLOG((M2*(E+QP)-MUS)/(M2*(E-QP)-MUS)) | |
33 | DFI=(S*QP/2.D0+BKT*TERM/4.D0/M2)/(S-MH**2) | |
34 | SSZZF5=DFI | |
35 | RETURN | |
36 | END |