| 02626a96 |
1 | C... ALICE interface to PDFLIB with possibility to select nuclear structure |
| 2 | C... functions. |
| 3 | C... |
| 4 | C... The MSTP array in the PYPARS common block is used to enable and |
| 5 | C... select the nuclear structure functions. |
| 6 | C... MSTP(52) : (D=1) choice of proton and nuclear structure-function library |
| 7 | C... =1: internal PYTHIA acording to MSTP(51) |
| 8 | C... =2: PDFLIB proton s.f., with MSTP(51) = 1000xNGROUP+NSET |
| 9 | C... MSTP( 51) = 1000xNPGROUP+NPSET |
| 10 | C... MSTP(151) = 1000xNAGROUP+NASET |
| 11 | C... MSTP(192) : Mass number of nucleus side 1 |
| 12 | C... MSTP(193) : Mass number of nucleus side 2 |
| 13 | C... |
| 14 | C... |
| 15 | C... MINT(124) : side (1 or 2) |
| 16 | |
| 17 | |
| 18 | SUBROUTINE PDFSET_ALICE(PARM, VALUE) |
| 19 | C... |
| 20 | IMPLICIT DOUBLE PRECISION(A-H, O-Z) |
| 21 | IMPLICIT INTEGER(I-N) |
| 22 | C...Interface to PDFLIB. |
| 23 | COMMON/LW50512/QCDL4,QCDL5 |
| 24 | SAVE /LW50512/ |
| 25 | DOUBLE PRECISION QCDL4,QCDL5 |
| 26 | COMMON/LW50513/XMIN,XMAX,Q2MIN,Q2MAX |
| 27 | SAVE /LW50513/ |
| 28 | DOUBLE PRECISION XMIN,XMAX,Q2MIN,Q2MAX |
| 29 | C... |
| 30 | COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200) |
| 31 | COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200) |
| 32 | DOUBLE PRECISION VALUE(20) |
| 33 | CHARACTER*20 PARM(20) |
| 34 | write(6,*) MSTP(52) |
| 35 | write(6,*) PARM |
| 36 | write(6,*) VALUE |
| 37 | |
| 38 | IF (MSTP(192) .GT. 0 .AND. MSTP(193) .GT. 0) THEN |
| 39 | PARM(5)='NATYPE' |
| 40 | VALUE(5)=4 |
| 41 | PARM(6)='NAGROUP' |
| 42 | VALUE(6)=MSTP(191)/1000 |
| 43 | PARM(7)='NASET' |
| 44 | VALUE(7)=MOD(MSTP(191),1000) |
| 45 | CALL PDFSET(PARM,VALUE, |
| 46 | > MSTU(11),MSTP(51),MSTP(53),MSTP(55), |
| 47 | > QCDL4,QCDL5, |
| 48 | > XMIN,XMAX,Q2MIN,Q2MAX) |
| 49 | IF (MSTP(194) .EQ. 0) THEN |
| 50 | CALL SETLHAPARM("EKS98") |
| 51 | ELSE |
| 52 | CALL SETLHAPARM("EPS08") |
| 53 | ENDIF |
| 54 | ELSE |
| 55 | write(6,*) "-> pdfset" |
| 56 | CALL PDFSET(PARM,VALUE, |
| 57 | > MSTU(11),MSTP(51),MSTP(53),MSTP(55), |
| 58 | > QCDL4,QCDL5, |
| 59 | > XMIN,XMAX,Q2MIN,Q2MAX) |
| 60 | ENDIF |
| 61 | write(6,*) "done" |
| 62 | END |
| 63 | |
| 64 | |
| 65 | |
| 66 | SUBROUTINE STRUCTM_ALICE |
| 67 | + (XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GL) |
| 68 | C... |
| 69 | IMPLICIT DOUBLE PRECISION(A-H, O-Z) |
| 70 | IMPLICIT INTEGER(I-N) |
| 71 | COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200) |
| 72 | COMMON/PYINT1/MINT(400),VINT(400) |
| 73 | C write(6,*) "structm_alice->" |
| 74 | IF (MSTP(192) .GT. 0 .AND. MSTP(193) .GT. 0) THEN |
| 75 | A=MSTP(191+MINT(124)) |
| 76 | C write(6,*) mint(124), "-> structa ", A |
| 77 | CALL STRUCTA(XX,QQ,A,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GL) |
| 78 | ELSE |
| 79 | C write(6,*) mint(124), "-> structm " |
| 80 | CALL STRUCTM(XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GL) |
| 81 | ENDIF |
| 82 | END |
| 83 | |
| 84 | |
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