| 1 | SUBROUTINE BOX61
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| 2 |
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| 3 | C-----------------------------------------------------------------------
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| 4 | C
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| 5 | C NUCLEON OR ANTINUCLEON INTERACTIONS
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| 6 | C LIGHT ISOBAR (FORWARD OR BACKWARD), NUCLEON
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| 7 | C INCLUDES ANNIHILATION
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| 8 | C THIS SUBROUTINE IS CALLED FROM NUCINT
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| 9 | C-----------------------------------------------------------------------
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| 10 |
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| 11 | IMPLICIT DOUBLE PRECISION (A-H,O-Z)
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| 12 | *KEEP,NCOUNT.
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| 13 | COMMON /NCOUNT/ NCOUN
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| 14 | INTEGER NCOUN(8)
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| 15 | *KEEP,PAM.
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| 16 | COMMON /PAM/ PAMA,SIGNUM
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| 17 | DOUBLE PRECISION PAMA(6000),SIGNUM(6000)
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| 18 | *KEEP,PARPAR.
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| 19 | COMMON /PARPAR/ CURPAR,SECPAR,PRMPAR,OUTPAR,C,
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| 20 | * E00,E00PN,PTOT0,PTOT0N,THICKH,ITYPE,LEVL
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| 21 | DOUBLE PRECISION CURPAR(14),SECPAR(14),PRMPAR(14),OUTPAR(14),
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| 22 | * C(50),E00,E00PN,PTOT0,PTOT0N,THICKH
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| 23 | INTEGER ITYPE,LEVL
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| 24 | *KEEP,PARPAE.
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| 25 | DOUBLE PRECISION GAMMA,COSTHE,PHI,H,T,X,Y,CHI,BETA,GCM,ECM
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| 26 | EQUIVALENCE (CURPAR(2),GAMMA), (CURPAR(3),COSTHE),
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| 27 | * (CURPAR(4), PHI ), (CURPAR(5), H ),
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| 28 | * (CURPAR(6), T ), (CURPAR(7), X ),
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| 29 | * (CURPAR(8), Y ), (CURPAR(9), CHI ),
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| 30 | * (CURPAR(10),BETA), (CURPAR(11),GCM ),
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| 31 | * (CURPAR(12),ECM )
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| 32 | *KEEP,RANDPA.
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| 33 | COMMON /RANDPA/ FAC,U1,U2,RD,NSEQ,ISEED,KNOR
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| 34 | DOUBLE PRECISION FAC,U1,U2
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| 35 | REAL RD(3000)
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| 36 | INTEGER ISEED(103,10),NSEQ
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| 37 | LOGICAL KNOR
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| 38 | *KEEP,RUNPAR.
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| 39 | COMMON /RUNPAR/ FIXHEI,THICK0,HILOECM,HILOELB,
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| 40 | * STEPFC,NRRUN,NSHOW,PATAPE,MONIIN,
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| 41 | * MONIOU,MDEBUG,NUCNUC,
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| 42 | * CETAPE,
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| 43 | * SHOWNO,ISHW,NOPART,NRECS,NBLKS,MAXPRT,NDEBDL,
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| 44 | * N1STTR,MDBASE,
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| 45 | * DEBDEL,DEBUG,FDECAY,FEGS,FIRSTI,FIXINC,FIXTAR,
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| 46 | * FIX1I,FMUADD,FNKG,FPRINT,FDBASE
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| 47 | * ,GHEISH,GHESIG
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| 48 | COMMON /RUNPAC/ DSN,HOST,USER
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| 49 | DOUBLE PRECISION FIXHEI,THICK0,HILOECM,HILOELB
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| 50 | REAL STEPFC
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| 51 | INTEGER NRRUN,NSHOW,PATAPE,MONIIN,MONIOU,MDEBUG,NUCNUC,
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| 52 | * SHOWNO,ISHW,NOPART,NRECS,NBLKS,MAXPRT,NDEBDL,
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| 53 | * N1STTR,MDBASE
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| 54 | INTEGER CETAPE
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| 55 | CHARACTER*79 DSN
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| 56 | CHARACTER*20 HOST,USER
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| 57 |
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| 58 | LOGICAL DEBDEL,DEBUG,FDECAY,FEGS,FIRSTI,FIXINC,FIXTAR,
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| 59 | * FIX1I,FMUADD,FNKG,FPRINT,FDBASE
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| 60 | * ,GHEISH,GHESIG
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| 61 | *KEEP,SIGM.
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| 62 | COMMON /SIGM/ SIGMA,SIGANN,SIGAIR,FRACTN,FRCTNO
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| 63 | DOUBLE PRECISION SIGMA,SIGANN,SIGAIR,FRACTN,FRCTNO
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| 64 | *KEND.
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| 65 |
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| 66 | C-----------------------------------------------------------------------
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| 67 |
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| 68 | IF ( DEBUG ) WRITE(MDEBUG,444) (CURPAR(I),I=1,9)
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| 69 | 444 FORMAT(' BOX61 : CURPAR=',1P,9E10.3)
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| 70 |
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| 71 | C ANNIHILATION
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| 72 | IF ( ITYPE .EQ. 15 .OR. ITYPE .EQ. 25 ) THEN
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| 73 | NCOUN(3) = NCOUN(3) + 1
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| 74 | CALL RMMAR( RD,1,1 )
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| 75 | IF ( RD(1)*SIGMA .LE. SIGANN ) THEN
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| 76 | NCOUN(4) = NCOUN(4) + 1
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| 77 | CALL NIHILA
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| 78 | RETURN
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| 79 | ENDIF
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| 80 | ENDIF
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| 81 |
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| 82 | C INTERACTION (ISOBAR EXCITATION)
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| 83 | C SELECT LIGHT ISOBAR AND NUCLEON MASSES
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| 84 | CA = C(3)
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| 85 | CB = PAMA(14)
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| 86 |
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| 87 | C DECIDE WHETHER ISOBAR GOES FORWARD OR BACKWARD
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| 88 | C FORWARD IF KIND = 0, BACKWORD IF KIND = 1
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| 89 | CALL RMMAR( RD,1,1 )
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| 90 | IF ( RD(1) .LE. 0.5 ) THEN
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| 91 | KIND = 0
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| 92 | ELSE
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| 93 | KIND = 1
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| 94 | ENDIF
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| 95 |
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| 96 | C LIGHT ISOBAR
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| 97 | CALL ISOBAR( ECM,KIND,CA,CB,1 )
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| 98 |
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| 99 | C NUCLEON
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| 100 | CALL SINGLE( ECM,1-KIND,CB,CA )
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| 101 |
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| 102 | RETURN
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| 103 | END
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