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0795afa3 | 1 | #include "isajet/pilot.h" |
2 | SUBROUTINE EVOL01 | |
3 | C---------------------------------------------------------------------- | |
4 | C- | |
5 | C- Purpose and Methods : | |
6 | C- Setup for process 1 (TWOJET) | |
7 | C- Lorentz frames and perform initial and final QCD jet | |
8 | C- evolution in leading-log approximation. | |
9 | C- | |
10 | C- Created 13-AUG-1991 Frank E. Paige,Serban D. Protopopescu | |
11 | C- | |
12 | C---------------------------------------------------------------------- | |
13 | #if defined(CERNLIB_IMPNONE) | |
14 | IMPLICIT NONE | |
15 | #endif | |
16 | #include "isajet/primar.inc" | |
17 | #include "isajet/jetpar.inc" | |
18 | #include "isajet/pjets.inc" | |
19 | #include "isajet/jetset.inc" | |
20 | #include "isajet/jwork.inc" | |
21 | #include "isajet/jwork2.inc" | |
22 | #include "isajet/frame.inc" | |
23 | REAL EVOLMS | |
24 | INTEGER I,K,J,NJSAVE,NJFINL | |
25 | C---------------------------------------------------------------------- | |
26 | C | |
27 | C Copy momenta from /PJETS/ to /JETSET/ | |
28 | N0JETS=NJSET+1 | |
29 | CALL IPJSET | |
30 | NJSAVE=NJSET | |
31 | C | |
32 | C Set flags and maximum off-shell masses and generate | |
33 | C initial QCD parton shower. | |
34 | C | |
35 | CALL ISTRAD(1.0) | |
36 | C | |
37 | IF(NJSET.LT.0) RETURN | |
38 | C | |
39 | C Final state evolution. | |
40 | C Define Lorentz frames and JMATCH pointers for jet evolution | |
41 | C and fragmentation. | |
42 | C | |
43 | CALL IFRAMS(N0JETS,NJSAVE,1,.FALSE.) | |
44 | C | |
45 | C Set maximum off-shell masses and JDCAY flags. | |
46 | C | |
47 | NJFINL=N0JETS | |
48 | DO 310 J=N0JETS,NJSAVE | |
49 | IF(IABS(JTYPE(J)).LT.10) THEN | |
50 | PJSET(5,J)=EVOLMS(J,1.0) | |
51 | JDCAY(J)=-1 | |
52 | ENDIF | |
53 | 310 CONTINUE | |
54 | C | |
55 | C Produce final-state QCD parton cascade | |
56 | C | |
57 | CALL QCDJET(NJFINL) | |
58 | C | |
59 | RETURN | |
60 | END |