PDF/spdf/hmrs2eb.F

   1 *
   2 * $Id$
   3 *
   4 * $Log$
   5 * Revision 1.1.1.2  1996/10/30 08:28:46  cernlib
   6 * Version 7.04
   7 *
   8 * Revision 1.1.1.1  1996/04/12 15:29:24  plothow
   9 * Version 7.01
  10 *
  11 *
  12 #include "pdf/pilot.h"
  13 C-----------------------------------------------------------------------
  14        SUBROUTINE HMRS2EB(X,SCALE,MODE,UPV,DNV,SEA,STR,CHM,BOT,GL)
  15 C***************************************************************C
  16 C                                                               C
  17 C                                                               C
  18 C     NEW VERSIONS !!!! JANUARY 1990  (AS DESCRIBED IN          C
  19 C     "PARTON DISTRIBUTIONS ... " P.N. HARRIMAN, A.D. MARTIN,   C
  20 C     R.G. ROBERTS AND W.J. STIRLING PREPRINT DTP-90-04 )       C
  21 C                                                               C
  22 C         ********* DEBUGGED APRIL 1990********                 C
  23 C  MODE 1 CORRESPONDS TO  HARRIMAN,                             C
  24 C  MARTIN, ROBERTS, STIRLING (EMC FIT)    WITH LAMBDA= 100 MEV  C
  25 C                                                               C
  26 C  MODE 2  CORRESPONDS TO HARRIMAN,                             C
  27 C  MARTIN, ROBERTS, STIRLING (BCDMS FIT)  WITH LAMBDA= 190 MEV  C
  28 C                                                               C
  29 C             >>>>>>>>  CROSS CHECK  <<<<<<<<                   C
  30 C                                                               C
  31 C    THE FIRST NUMBER IN THE "E" GRID IS 0.04096                C
  32 C    THE FIRST NUMBER IN THE "B" GRID IS 0.04574                C
  33 C                                                               C
  34 C                                                               C
  35 C                         -*-                                   C
  36 C                                                               C
  37 C    (NOTE THAT X TIMES THE PARTON DISTRIBUTION FUNCTION        C
  38 C    IS RETURNED I.E. G(X) = GLU/X ETC, AND THAT "SEA"          C
  39 C    IS THE LIGHT QUARK SEA I.E. UBAR(X)=DBAR(X)=  ...          C
  40 C    = SEA/X FOR A PROTON.  IF IN DOUBT, CHECK THE              C
  41 C    MOMENTUM SUM RULE! NOTE ALSO THAT SCALE=Q IN GEV)          C
  42 C                                                               C
  43 C                         -*-                                   C
  44 C                                                               C
  45 C     (THE RANGE OF APPLICABILITY IS CURRENTLY:                 C
  46 C     10**-4 < X < 1  AND  5 < Q**2 < 1.31 * 10**6              C
  47 C     HIGHER Q**2 VALUES CAN BE SUPPLIED ON REQUEST             C
  48 C     - PROBLEMS, COMMENTS ETC TO WJS@UK.AC.DUR.HEP             C
  49 C                                                               C
  50 C                                                               C
  51 C***************************************************************C
  52 #include "pdf/impdp.inc"
  53       IF(MODE.EQ.1) CALL STRH2E(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)
  54       IF(MODE.EQ.2) CALL STRH2B(X,SCALE,UPV,DNV,SEA,STR,CHM,BOT,GL)
  55       RETURN
  56       END