| 1 | SUBROUTINE PPARAM | 
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| 2 |  | 
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| 3 | C----------------------------------------------------------------------- | 
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| 4 | C  P(ARTICLE) PARAM(ETERS) | 
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| 5 | C | 
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| 6 | C  SETS PARAMETERS (PARTICLE TYP, TRANSVERSE MOMENTUM) | 
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| 7 | C  OF SECONDARY PARTICLES IN HDPM | 
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| 8 | C  THIS SUBROUTINE IS CALLED FROM HDPM | 
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| 9 | C | 
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| 10 | C  DESIGN  : D. HECK    IK3  FZK KARLSRUHE | 
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| 11 | C  CHANGES : J.N. CAPDEVIELLE CDF PARIS | 
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| 12 | C----------------------------------------------------------------------- | 
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| 13 |  | 
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| 14 | IMPLICIT DOUBLE PRECISION (A-H,O-Z) | 
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| 15 | *KEEP,AVPT. | 
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| 16 | COMMON /AVPT/    AVPT,AVPK,AVPN,AVPH,AVPE | 
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| 17 | DOUBLE PRECISION AVPT,AVPK,AVPN,AVPH,AVPE | 
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| 18 | *KEEP,DPMFLG. | 
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| 19 | COMMON /DPMFLG/  NFLAIN,NFLDIF,NFLPI0,NFLCHE,NFLPIF,NFRAGM | 
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| 20 | INTEGER          NFLAIN,NFLDIF,NFLPI0,NFLCHE,NFLPIF,NFRAGM | 
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| 21 | *KEEP,INDICE. | 
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| 22 | COMMON /INDICE/  NNUCN,NKA0,NHYPN,NETA,NETAS,NPIZER, | 
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| 23 | *                 NNC,NKC,NHC,NPC,NCH,NNN,NKN,NHN,NET,NPN | 
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| 24 | INTEGER          NNUCN(2:3),NKA0(2:3),NHYPN(2:3),NETA(2:3,1:4), | 
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| 25 | *                 NETAS(2:3),NPIZER(2:3), | 
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| 26 | *                 NNC,NKC,NHC,NPC,NCH,NNN,NKN,NHN,NET,NPN | 
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| 27 | *KEEP,INTER. | 
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| 28 | COMMON /INTER/   AVCH,AVCH3,DC0,DLOG,DMLOG,ECMDIF,ECMDPM,ELAB, | 
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| 29 | *                 FNEUT,FNEUT2,GNU,PLAB,POSC2,POSC3,POSN2,POSN3, | 
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| 30 | *                 RC3TO2,S,SEUGF,SEUGP,SLOG,SLOGSQ,SMLOG, | 
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| 31 | *                 WIDC2,WIDC3,WIDN2,WIDN3,YCM,YY0,ZN, | 
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| 32 | *                 IDIF,ITAR | 
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| 33 | DOUBLE PRECISION AVCH,AVCH3,DC0,DLOG,DMLOG,ECMDIF,ECMDPM,ELAB, | 
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| 34 | *                 FNEUT,FNEUT2,GNU,PLAB,POSC2,POSC3,POSN2,POSN3, | 
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| 35 | *                 RC3TO2,S,SEUGF,SEUGP,SLOG,SLOGSQ,SMLOG, | 
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| 36 | *                 WIDC2,WIDC3,WIDN2,WIDN3,YCM,YY0,ZN | 
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| 37 | INTEGER          IDIF,ITAR | 
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| 38 | *KEEP,LEPAR. | 
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| 39 | COMMON /LEPAR/   LEPAR1,LEPAR2,LASTPI,NRESPC,NRESPN,NCPLUS | 
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| 40 | INTEGER          LEPAR1,LEPAR2,LASTPI,NRESPC,NRESPN,NCPLUS | 
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| 41 | *KEEP,NEWPAR. | 
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| 42 | COMMON /NEWPAR/  EA,PT2,PX,PY,TMAS,YR,ITYP, | 
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| 43 | *                 IA1,IA2,IB1,IB2,IC1,IC2,ID1,ID2,IE1,IE2,IF1,IF2, | 
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| 44 | *                 IG1,IG2,IH1,IH2,II1,II2,IJ1,NTOT | 
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| 45 | DOUBLE PRECISION EA(3000),PT2(3000),PX(3000),PY(3000),TMAS(3000), | 
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| 46 | *                 YR(3000) | 
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| 47 | INTEGER          ITYP(3000), | 
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| 48 | *                 IA1,IA2,IB1,IB2,IC1,IC2,ID1,ID2,IE1,IE2,IF1,IF2, | 
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| 49 | *                 IG1,IG2,IH1,IH2,II1,II2,IJ1,NTOT | 
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| 50 | *KEEP,PAM. | 
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| 51 | COMMON /PAM/     PAMA,SIGNUM | 
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| 52 | DOUBLE PRECISION PAMA(6000),SIGNUM(6000) | 
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| 53 | *KEEP,RANDPA. | 
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| 54 | COMMON /RANDPA/  FAC,U1,U2,RD,NSEQ,ISEED,KNOR | 
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| 55 | DOUBLE PRECISION FAC,U1,U2 | 
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| 56 | REAL             RD(3000) | 
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| 57 | INTEGER          ISEED(103,10),NSEQ | 
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| 58 | LOGICAL          KNOR | 
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| 59 | *KEEP,RUNPAR. | 
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| 60 | COMMON /RUNPAR/  FIXHEI,THICK0,HILOECM,HILOELB, | 
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| 61 | *                 STEPFC,NRRUN,NSHOW,PATAPE,MONIIN, | 
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| 62 | *                 MONIOU,MDEBUG,NUCNUC, | 
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| 63 | *                 CETAPE, | 
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| 64 | *                 SHOWNO,ISHW,NOPART,NRECS,NBLKS,MAXPRT,NDEBDL, | 
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| 65 | *                 N1STTR,MDBASE, | 
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| 66 | *                 DEBDEL,DEBUG,FDECAY,FEGS,FIRSTI,FIXINC,FIXTAR, | 
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| 67 | *                 FIX1I,FMUADD,FNKG,FPRINT,FDBASE | 
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| 68 | *                ,GHEISH,GHESIG | 
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| 69 | COMMON /RUNPAC/  DSN,HOST,USER | 
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| 70 | DOUBLE PRECISION FIXHEI,THICK0,HILOECM,HILOELB | 
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| 71 | REAL             STEPFC | 
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| 72 | INTEGER          NRRUN,NSHOW,PATAPE,MONIIN,MONIOU,MDEBUG,NUCNUC, | 
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| 73 | *                 SHOWNO,ISHW,NOPART,NRECS,NBLKS,MAXPRT,NDEBDL, | 
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| 74 | *                 N1STTR,MDBASE | 
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| 75 | INTEGER          CETAPE | 
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| 76 | CHARACTER*79     DSN | 
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| 77 | CHARACTER*20     HOST,USER | 
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| 78 |  | 
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| 79 | LOGICAL          DEBDEL,DEBUG,FDECAY,FEGS,FIRSTI,FIXINC,FIXTAR, | 
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| 80 | *                 FIX1I,FMUADD,FNKG,FPRINT,FDBASE | 
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| 81 | *                ,GHEISH,GHESIG | 
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| 82 | *KEND. | 
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| 83 |  | 
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| 84 | C----------------------------------------------------------------------- | 
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| 85 |  | 
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| 86 | IF ( DEBUG ) WRITE(MDEBUG,*) 'PPARAM: NTOT,NPC,NCPLUS=', | 
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| 87 | *                                      NTOT,NPC,NCPLUS | 
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| 88 |  | 
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| 89 | C  FILL PARTICLES INTO ARRAYS, CALCULATE PT AND SUM UP | 
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| 90 | SPX   = 0.D0 | 
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| 91 | SPY   = 0.D0 | 
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| 92 | NPART = 3 | 
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| 93 | C  PROTON ANTIPROTON PAIRS | 
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| 94 | DO 1003  K = 1,NNC | 
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| 95 | CALL RMMAR( RD,1,1 ) | 
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| 96 | IF ( RD(1) .LT. 0.5 ) THEN | 
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| 97 | ITYP(NPART)   = 14 | 
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| 98 | ITYP(NPART+1) = 15 | 
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| 99 | ELSE | 
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| 100 | ITYP(NPART)   = 15 | 
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| 101 | ITYP(NPART+1) = 14 | 
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| 102 | ENDIF | 
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| 103 | CALL PTRAM( ZN,AVPN,PX(NPART),PY(NPART) ) | 
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| 104 | CALL PTRAM( ZN,AVPN,PX(NPART+1),PY(NPART+1) ) | 
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| 105 | SPX   = SPX + PX(NPART) + PX(NPART+1) | 
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| 106 | SPY   = SPY + PY(NPART) + PY(NPART+1) | 
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| 107 | NPART = NPART + 2 | 
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| 108 | 1003 CONTINUE | 
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| 109 | C  K+ K- PAIRS | 
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| 110 | DO 1004  K = 1,NKC | 
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| 111 | CALL RMMAR( RD,1,1 ) | 
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| 112 | IF ( RD(1) .LT. 0.5 ) THEN | 
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| 113 | ITYP(NPART)   = 11 | 
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| 114 | ITYP(NPART+1) = 12 | 
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| 115 | ELSE | 
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| 116 | ITYP(NPART)   = 12 | 
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| 117 | ITYP(NPART+1) = 11 | 
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| 118 | ENDIF | 
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| 119 | CALL PTRAM( ZN,AVPK,PX(NPART),PY(NPART) ) | 
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| 120 | CALL PTRAM( ZN,AVPK,PX(NPART+1),PY(NPART+1) ) | 
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| 121 | SPX   = SPX + PX(NPART) + PX(NPART+1) | 
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| 122 | SPY   = SPY + PY(NPART) + PY(NPART+1) | 
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| 123 | NPART = NPART + 2 | 
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| 124 | 1004 CONTINUE | 
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| 125 | C  SIGMA PAIRS | 
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| 126 | DO 1005  K = 1,NHC | 
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| 127 | CALL RMMAR( RD,2,1 ) | 
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| 128 | IF ( RD(1) .LT. 0.5 ) THEN | 
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| 129 | IF ( RD(2) .LT. 0.5 ) THEN | 
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| 130 | ITYP(NPART)   = 19 | 
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| 131 | ITYP(NPART+1) = 27 | 
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| 132 | ELSE | 
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| 133 | ITYP(NPART)   = 27 | 
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| 134 | ITYP(NPART+1) = 19 | 
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| 135 | ENDIF | 
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| 136 | ELSE | 
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| 137 | IF ( RD(2) .LT. 0.5 ) THEN | 
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| 138 | ITYP(NPART)   = 21 | 
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| 139 | ITYP(NPART+1) = 29 | 
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| 140 | ELSE | 
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| 141 | ITYP(NPART)   = 29 | 
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| 142 | ITYP(NPART+1) = 21 | 
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| 143 | ENDIF | 
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| 144 | ENDIF | 
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| 145 | CALL PTRAM( ZN,AVPH,PX(NPART),PY(NPART) ) | 
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| 146 | CALL PTRAM( ZN,AVPH,PX(NPART+1),PY(NPART+1) ) | 
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| 147 | SPX   = SPX + PX(NPART) + PX(NPART+1) | 
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| 148 | SPY   = SPY + PY(NPART) + PY(NPART+1) | 
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| 149 | NPART = NPART + 2 | 
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| 150 | 1005 CONTINUE | 
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| 151 |  | 
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| 152 | C  DECIDE WITH WHICH CHARGED PION TO START WITH | 
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| 153 | C  NUMBER OF PIONS MAY BE ODD IN THE CASE IF ISEL IS 1 | 
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| 154 | CALL RMMAR( RD,1,1 ) | 
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| 155 | IF ( RD(1) .GT. 0.5 ) THEN | 
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| 156 | NPIOCH = 0 | 
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| 157 | ELSE | 
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| 158 | NPIOCH = 1 | 
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| 159 | ENDIF | 
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| 160 | NPOS = NCPLUS | 
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| 161 | C  PI +- | 
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| 162 | DO 1007  K = 1,NPC | 
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| 163 | IF     ( NPC-K+1 .LE.  NPOS ) THEN | 
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| 164 | NPIOCH = 1 | 
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| 165 | IF ( DEBUG ) WRITE(MDEBUG,*) '   NPC,K,NPOS,NPIOCH=', | 
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| 166 | *                                     NPC,K,NPOS,NPIOCH | 
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| 167 | ELSEIF ( NPC-K+1 .LE. -NPOS ) THEN | 
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| 168 | NPIOCH = 0 | 
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| 169 | IF ( DEBUG ) WRITE(MDEBUG,*) '   NPC,K,-NPOS,NPIOCH=', | 
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| 170 | *                                     NPC,K,-NPOS,NPIOCH | 
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| 171 | ENDIF | 
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| 172 | IF ( NPIOCH .EQ. 0 ) THEN | 
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| 173 | ITYP(NPART) = 8 | 
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| 174 | NPIOCH = 1 | 
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| 175 | NPOS   = NPOS + 1 | 
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| 176 | ELSE | 
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| 177 | ITYP(NPART) = 9 | 
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| 178 | NPIOCH = 0 | 
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| 179 | NPOS   = NPOS - 1 | 
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| 180 | ENDIF | 
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| 181 | CALL PTRAM( ZN,AVPT,PX(NPART),PY(NPART) ) | 
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| 182 | SPX   = SPX + PX(NPART) | 
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| 183 | SPY   = SPY + PY(NPART) | 
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| 184 | NPART = NPART + 1 | 
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| 185 | 1007 CONTINUE | 
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| 186 | C  NEUTRON ANTINEUTRON PAIRS | 
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| 187 | DO 1008  K = 1,NNN | 
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| 188 | CALL RMMAR( RD,1,1 ) | 
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| 189 | IF ( RD(1) .LT. 0.5 ) THEN | 
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| 190 | ITYP(NPART)   = 13 | 
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| 191 | ITYP(NPART+1) = 25 | 
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| 192 | ELSE | 
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| 193 | ITYP(NPART)   = 25 | 
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| 194 | ITYP(NPART+1) = 13 | 
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| 195 | ENDIF | 
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| 196 | CALL PTRAM( ZN,AVPN,PX(NPART),PY(NPART) ) | 
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| 197 | CALL PTRAM( ZN,AVPN,PX(NPART+1),PY(NPART+1) ) | 
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| 198 | SPX   = SPX + PX(NPART) + PX(NPART+1) | 
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| 199 | SPY   = SPY + PY(NPART) + PY(NPART+1) | 
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| 200 | NPART = NPART + 2 | 
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| 201 | 1008 CONTINUE | 
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| 202 | C  K0L K0S PAIRS | 
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| 203 | DO 1009  K = 1,NKN | 
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| 204 | CALL RMMAR( RD,1,1 ) | 
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| 205 | IF ( RD(1) .LT. 0.5 ) THEN | 
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| 206 | ITYP(NPART)   = 10 | 
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| 207 | ITYP(NPART+1) = 16 | 
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| 208 | ELSE | 
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| 209 | ITYP(NPART)   = 16 | 
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| 210 | ITYP(NPART+1) = 10 | 
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| 211 | ENDIF | 
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| 212 | CALL PTRAM( ZN,AVPK,PX(NPART),PY(NPART) ) | 
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| 213 | CALL PTRAM( ZN,AVPK,PX(NPART+1),PY(NPART+1) ) | 
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| 214 | SPX   = SPX + PX(NPART) + PX(NPART+1) | 
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| 215 | SPY   = SPY + PY(NPART) + PY(NPART+1) | 
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| 216 | NPART = NPART + 2 | 
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| 217 | 1009 CONTINUE | 
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| 218 | C  LAMDA/SIGMA0 PAIRS | 
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| 219 | DO 1010  K = 1,NHN | 
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| 220 | CALL RMMAR( RD,2,1 ) | 
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| 221 | IF ( RD(1) .LT. 0.5 ) THEN | 
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| 222 | IF ( RD(2) .LT. 0.5 ) THEN | 
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| 223 | ITYP(NPART)   = 18 | 
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| 224 | ITYP(NPART+1) = 28 | 
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| 225 | ELSE | 
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| 226 | ITYP(NPART)   = 28 | 
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| 227 | ITYP(NPART+1) = 18 | 
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| 228 | ENDIF | 
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| 229 | ELSE | 
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| 230 | IF ( RD(2) .LT. 0.5 ) THEN | 
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| 231 | ITYP(NPART)   = 26 | 
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| 232 | ITYP(NPART+1) = 20 | 
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| 233 | ELSE | 
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| 234 | ITYP(NPART)   = 20 | 
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| 235 | ITYP(NPART+1) = 26 | 
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| 236 | ENDIF | 
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| 237 | ENDIF | 
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| 238 | C      -----  CHANGE BY JNC DEC.96) | 
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| 239 | IF ( ECMDPM .LE. 500.D0 ) THEN | 
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| 240 | CALL PTRAN( ZN,AVPH,PX(NPART),PY(NPART) ) | 
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| 241 | CALL PTRAN( ZN,AVPH,PX(NPART+1),PY(NPART+1) ) | 
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| 242 | ELSE | 
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| 243 | CALL PTRAM( ZN,AVPH,PX(NPART),PY(NPART) ) | 
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| 244 | CALL PTRAM( ZN,AVPH,PX(NPART+1),PY(NPART+1) ) | 
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| 245 | ENDIF | 
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| 246 | SPX   = SPX + PX(NPART) + PX(NPART+1) | 
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| 247 | SPY   = SPY + PY(NPART) + PY(NPART+1) | 
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| 248 | NPART = NPART + 2 | 
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| 249 | 1010 CONTINUE | 
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| 250 | C  ETA | 
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| 251 | DO 1013  K = 1,NET | 
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| 252 | C  FIRST FOR ETAS FROM THIRD STRING | 
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| 253 | IF     ( K .LE. NETA(3,1)                              ) THEN | 
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| 254 | ITYP(NPART) = 71 | 
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| 255 | ELSEIF ( K .LE. NETA(3,1)+NETA(3,2)                    ) THEN | 
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| 256 | ITYP(NPART) = 72 | 
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| 257 | ELSEIF ( K .LE. NETA(3,1)+NETA(3,2)+NETA(3,3)          ) THEN | 
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| 258 | ITYP(NPART) = 73 | 
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| 259 | ELSEIF ( K .LE. NETA(3,1)+NETA(3,2)+NETA(3,3)+NETA(3,4)) THEN | 
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| 260 | ITYP(NPART) = 74 | 
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| 261 | C  NOW FOR ETAS FROM FIRST AND SECOND STRING | 
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| 262 | ELSEIF ( K .LE. NETAS(3)+NETA(2,1)                     ) THEN | 
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| 263 | ITYP(NPART) = 71 | 
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| 264 | ELSEIF ( K .LE. NETAS(3)+NETA(2,1)+NETA(2,2)           ) THEN | 
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| 265 | ITYP(NPART) = 72 | 
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| 266 | ELSEIF ( K .LE. NETAS(3)+NETA(2,1)+NETA(2,2)+NETA(2,3) ) THEN | 
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| 267 | ITYP(NPART) = 73 | 
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| 268 | ELSE | 
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| 269 | ITYP(NPART) = 74 | 
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| 270 | ENDIF | 
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| 271 | C      -----  CHANGE BY JNC DEC.96) | 
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| 272 | IF ( ECMDPM .LE. 500.D0 ) THEN | 
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| 273 | CALL PTRAN( ZN,AVPE,PX(NPART),PY(NPART) ) | 
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| 274 | ELSE | 
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| 275 | CALL PTRAM( ZN,AVPE,PX(NPART),PY(NPART) ) | 
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| 276 | ENDIF | 
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| 277 | SPX   = SPX + PX(NPART) | 
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| 278 | SPY   = SPY + PY(NPART) | 
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| 279 | NPART = NPART + 1 | 
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| 280 | 1013 CONTINUE | 
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| 281 | C  PI(0) | 
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| 282 | DO 1014  K = 1,NPN | 
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| 283 | ITYP(NPART) = 7 | 
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| 284 | C      -----  CHANGE BY JNC DEC.96) | 
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| 285 | IF ( ECMDPM .LE. 500.D0 ) THEN | 
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| 286 | CALL PTRAN( ZN,AVPT,PX(NPART),PY(NPART) ) | 
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| 287 | ELSE | 
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| 288 | CALL PTRAM( ZN,AVPT,PX(NPART),PY(NPART) ) | 
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| 289 | ENDIF | 
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| 290 | SPX   = SPX + PX(NPART) | 
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| 291 | SPY   = SPY + PY(NPART) | 
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| 292 | NPART = NPART + 1 | 
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| 293 | 1014 CONTINUE | 
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| 294 |  | 
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| 295 | C  ANTILEADER (FROM TARGET, THEREFORE ALWAYS NUCLEON OR DELTA RESONANCE) | 
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| 296 | ITYP(2) = LEPAR2 | 
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| 297 | C      -----  CHANGE BY JNC DEC.96) | 
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| 298 | IF ( ECMDPM .LE. 500.D0 ) THEN | 
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| 299 | CALL PTRAN( ZN,AVPN,PX(2),PY(2) ) | 
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| 300 | ELSE | 
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| 301 | CALL PTRAM( ZN,AVPN,PX(2),PY(2) ) | 
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| 302 | ENDIF | 
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| 303 |  | 
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| 304 | C  FIRST PARTICLE IS LEADING PARTICLE | 
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| 305 | ITYP(1) = LEPAR1 | 
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| 306 | IF     (  (LEPAR1 .GE.  7  .AND.  LEPAR1 .LE.  9)  .OR. | 
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| 307 | *          (LEPAR1 .GE. 51  .AND.  LEPAR1 .LE. 53) ) THEN | 
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| 308 | C  LEADING PARTICLE IS PION OR RHO RESONANCE | 
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| 309 | AVERPT = AVPT | 
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| 310 | C  LEADING PARTICLE IS KAON OR KAON RESONANCE | 
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| 311 | ELSEIF ( LEPAR1 .EQ. 10  .OR.  LEPAR1 .EQ. 11  .OR. | 
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| 312 | *         LEPAR1 .EQ. 12  .OR.  LEPAR1 .EQ. 16  .OR. | 
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| 313 | *        (LEPAR1 .GE. 62  .AND. LEPAR1 .LE. 68) ) THEN | 
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| 314 | AVERPT = AVPK | 
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| 315 | ELSE | 
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| 316 | C  LEADING PARTICLE IS NUCLEON OR ANTINUCLEON OR DELTA RESONANCE | 
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| 317 | C  OR STRANGE BARYON | 
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| 318 | AVERPT = AVPN | 
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| 319 | ENDIF | 
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| 320 | C      -----  CHANGE BY JNC DEC.96) | 
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| 321 | IF ( ECMDPM .LE. 500.D0 ) THEN | 
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| 322 | CALL PTRAN( ZN,AVERPT,PX(1),PY(1) ) | 
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| 323 | ELSE | 
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| 324 | CALL PTRAM( ZN,AVERPT,PX(1),PY(1) ) | 
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| 325 | ENDIF | 
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| 326 | SPX = SPX + PX(1) + PX(2) | 
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| 327 | SPY = SPY + PY(1) + PY(2) | 
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| 328 |  | 
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| 329 | C  AVERAGE EXCESS PT PER PARTICLE | 
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| 330 | SPX = SPX / NTOT | 
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| 331 | SPY = SPY / NTOT | 
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| 332 |  | 
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| 333 | C  RENORMALIZATION OF PT AND CALCULATION OF TRANSVERSE MASSES | 
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| 334 | DO 130  I = 1,NTOT | 
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| 335 | PX(I)   = PX(I) - SPX | 
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| 336 | PY(I)   = PY(I) - SPY | 
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| 337 | PT2(I)  = PX(I)**2 + PY(I)**2 | 
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| 338 | TMAS(I) = SQRT( PAMA(ITYP(I))**2 + PT2(I) ) | 
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| 339 | 130  CONTINUE | 
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| 340 |  | 
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| 341 | RETURN | 
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| 342 | END | 
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