--- /dev/null
+*
+* $Id$
+*
+* $Log$
+* Revision 1.1.1.2 1996/10/30 08:30:27 cernlib
+* Version 7.04
+*
+* Revision 1.1.1.1 1996/04/12 15:29:45 plothow
+* Version 7.01
+*
+*
+#include "pdf/pilot.h"
+ SUBROUTINE SFMSFA(X,SCALE,UPV,DNV,USEA,DSEA,STR,CHM,BOT,GLU)
+cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
+c c
+c This program returns the fitted parton distributions for MRS(A) c
+c *** Reference: DTP/94/34 (1994) *** c
+c c
+cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
+#include "pdf/impdp.inc"
+ DIMENSION Z(18,8),F(8)
+ DATA ((Z(I,K),I=1,18),K=1,4)/
+ +2.029386, -1.892760, 0.478114, 0.538000, 0.044742, 0.058742,
+ +3.956000, -0.136659, -0.513630, -0.389400, 1.267936, 0.134397,
+ +5.132000, -0.235874, 0.939374, -0.008433, 0.833784, 0.376702,
+
+ +0.295255, -0.169615, 0.028711, 0.330000, 0.174503, -0.045713,
+ +4.706000, -0.536820, 0.114806, 5.029000, -0.322071, 0.949196,
+ +5.561000, -2.161758, -1.334992, -0.002353, 1.134808, -0.156988,
+
+ +0.775400,-0.517656,0.159759,-0.300000,0.049683,-0.098598,
+ +5.300000,0.233708,0.282415,0.000000,-1.100596,0.052043,
+ +5.200000,-3.232076,0.712254,0.003932,1.625446,-0.699441,
+
+ +0.160750, -0.104311, 0.017157, -0.300000, 0.052451, -0.065844,
+ +9.272000, -0.576575, 0.109982, -1.153000, 1.173228, 0.169775,
+ +15.600000, -6.054861, 0.267608, -0.002159, 0.919959, -0.153501/
+
+ DATA ((Z(I,K),I=1,18),K=5,8)/
+ +0.099280, -0.042174, 0.008380, 0.400000, -0.070009, 0.067714,
+ +9.270000, 0.606514, -0.190625, 0.000000, 7.334181, -3.106807,
+ +25.000000,-20.291985, 4.165453, -0.005437, 0.080749, 0.256036,
+
+ +0.040260, -0.021695, 0.004481, -0.300000, 0.024073, -0.042711,
+ +9.272000, -1.998587, 1.019307, -1.153000, 2.932868, -1.591815,
+ +15.600000,-14.772277, 5.885859, -0.003502, 1.155235, -0.269042,
+
+ +0.001753, 0.017854, -0.004894, -0.195549, -0.180373, 0.047210,
+ +6.592858, 1.960693, -1.082506, 0.121744, -0.775791, 0.007846,
+ +8.249182, -7.279327, 1.702087, 0.928112, -0.034017, 0.084953,
+
+ +-0.004324, 0.012668, -0.001675, -0.276236, 0.090440, -0.112318,
+ +2.647901, 3.239016, -0.534956, 1.390272, -2.629704, 0.646575,
+ +-3.178775, 4.968992, -1.683463, 1.055388, 0.781798, -0.491059/
+C
+ AL=0.23
+ Q2=SCALE*SCALE
+ Q0=2.
+ ARG=( LOG(SCALE/AL)/ LOG(Q0/AL))
+ S= LOG(ARG)
+C
+ DO 10 J=1,8
+
+ A=Z(1,J)+Z(2,J)*S+Z(3,J)*S*S
+ B=Z(4,J)+Z(5,J)*S+Z(6,J)*S*S
+ C=Z(7,J)+Z(8,J)*S+Z(9,J)*S*S
+ D=Z(10,J)+Z(11,J)*S+Z(12,J)*S*S
+ E=Z(13,J)+Z(14,J)*S+Z(15,J)*S*S
+ H=Z(16,J)+Z(17,J)*S+Z(18,J)*S*S
+ 10 F(J)=A*X**B*(1.D0-X)**C*(1.D0+D*SQRT(X)+E*X)*( LOG(1.D0/X))**H
+ UPV=F(1)
+ DNV=F(2)
+ GLU=F(3)
+ DUSUM=F(4)
+ DUDIF=F(5)
+ STR=F(6)
+ CHM=F(7)
+ BOT=F(8)
+ DSEA=0.5D0*(DUSUM+DUDIF)
+ USEA=0.5D0*(DUSUM-DUDIF)
+ IF(Q2.LT.2.7D0) CHM=0.D0
+ IF(Q2.LT.30.D0) BOT=0.D0
+ IF(CHM.LT.0.D0) CHM=0.D0
+ IF(BOT.LT.0.D0) BOT=0.D0
+ RETURN
+ END
+