5 * Revision 1.1.1.2 1996/10/30 08:28:50 cernlib
8 * Revision 1.1.1.1 1996/04/12 15:29:24 plothow
12 #include "pdf/pilot.h"
13 C-----------------------------------------------------------------------
14 SUBROUTINE KMRSEB(X,SCALE,MODE,UPV,DNV,SEA,STR,CHM,BOT,GL)
15 C***************************************************************C
17 C ----- VARIABLE QUARKS AND GLUONS AT SMALL X ---- C
19 C NEW VERSIONS !!!! JULY 1990 C
20 C "........................ " J. KWIECINSKI, A.D. MARTIN, C
21 C R.G. ROBERTS AND W.J. STIRLING PREPRINT DTP-90-46 ) C
23 C MODE 1 CORRESPONDS TO HARRIMAN, C
24 C MARTIN, ROBERTS, STIRLING (BCDMS FIT) WITH LAMBDA= 190 MEV C
25 C WITH SMALL X BEHAVIOUR DETERMINED FROM FIT "HB FIT" C
27 C MODE 2 CORRESPONDS TO KWIECINSKI, C
28 C MARTIN, ROBERTS, STIRLING (BCDMS FIT) WITH LAMBDA= 190 MEV C
29 C AND XG,XQ --> CONSTANT AS X--> 0 AT Q0**2 "B0 FIT" C
31 C MODE 3 CORRESPONDS TO KWIECINSKI, C
32 C MARTIN, ROBERTS, STIRLING (BCDMS FIT) WITH LAMBDA= 190 MEV C
33 C AND XG,XQ --> X**-1/2 AS X--> 0 AT Q0**2 "B- FIT" C
35 C MODE 4 CORRESPONDS TO KWIECINSKI, C
36 C MARTIN, ROBERTS, STIRLING (BCDMS FIT) WITH LAMBDA= 190 MEV C
37 C AND XG,XQ --> X**-1/2 AS X--> 0 AT Q0**2 "B-(5) FIT" C
38 C I.E. WITH WEAK (R=5 GEV^-1) SHADOWING INCLUDED C
40 C MODE 5 CORRESPONDS TO KWIECINSKI, C
41 C MARTIN, ROBERTS, STIRLING (BCDMS FIT) WITH LAMBDA= 190 MEV C
42 C AND XG,XQ --> X**-1/2 AS X--> 0 AT Q0**2 "B-(2) FIT" C
43 C I.E. WITH STRONG (R=2 GEV^-1) SHADOWING INCLUDED C
46 C >>>>>>>> CROSS CHECK <<<<<<<< C
48 C THE FIRST NUMBER IN THE "HB" GRID IS .03058 C
49 C THE FIRST NUMBER IN THE "B0" GRID IS .01727 C
50 C THE FIRST NUMBER IN THE "B-" GRID IS .01543 C
51 C THE FIRST NUMBER IN THE "B-5"GRID IS .0 C
52 C THE FIRST NUMBER IN THE "B-2"GRID IS .0 C
58 C (NOTE THAT X TIMES THE PARTON DISTRIBUTION FUNCTION C
59 C IS RETURNED I.E. G(X) = GLU/X ETC, AND THAT "SEA" C
60 C IS THE LIGHT QUARK SEA I.E. UBAR(X)=DBAR(X) C
61 C = SEA/X FOR A PROTON. IF IN DOUBT, CHECK THE C
62 C MOMENTUM SUM RULE! NOTE ALSO THAT SCALE=Q IN GEV) C
66 C (THE RANGE OF APPLICABILITY IS CURRENTLY: C
67 C 10**-5 < X < 1 AND 5 < Q**2 < 1.31 * 10**6 C
68 C HIGHER Q**2 VALUES CAN BE SUPPLIED ON REQUEST C
69 C - PROBLEMS, COMMENTS ETC TO WJS@UK.AC.DUR.HEP C
72 C***************************************************************C
73 #include "pdf/impdp.inc"
74 IF(MODE.EQ.1) CALL STRH3B(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)
75 IF(MODE.EQ.2) CALL STRKB0O(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)
76 IF(MODE.EQ.3) CALL STRKBM(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)
77 IF(MODE.EQ.5) CALL SFKBMR2(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)
78 IF(MODE.EQ.5) CALL SFKBMR5(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)