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Commit | Line | Data |
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21886bb6 | 1 | * |
2 | * $Id$ | |
3 | * | |
4 | * $Log$ | |
5 | * Revision 1.1.1.2 1996/10/30 08:27:40 cernlib | |
6 | * Version 7.04 | |
7 | * | |
8 | * Revision 1.1.1.1 1996/04/12 15:29:05 plothow | |
9 | * Version 7.01 | |
10 | * | |
11 | * | |
12 | #include "pdf/pilot.h" | |
13 | SUBROUTINE BXGLUE (X,QQ,XGL) | |
14 | C....................................................................... | |
15 | C. | |
16 | C. GLUON | |
17 | C. | |
18 | C....................................................................... | |
19 | #include "pdf/impdp.inc" | |
20 | DATA XLAM /0.47D00/, Q02/5.D0/ | |
21 | DATA ONED/1.D0/, FIVED2/5.2D0/ | |
22 | C | |
23 | S = LOG( LOG( MAX( FIVED2,QQ)/XLAM**2)/ LOG( Q02/XLAM**2)) | |
24 | C CGL=2.01D00-3.56D00*S+5.10D00*S**2 | |
25 | C ... modified according to Z. Phys. C2 (79) 265, HPB - 25.2.91 | |
26 | CGL=2.01D00-3.56D00*S+1.98D00*S*S | |
27 | ETA1=-1.13D00*S+0.48D00*S*S | |
28 | ETA2=2.90D00+5.08D00*S*4.00D00/25.0D00 | |
29 | XGL=CGL*(X**ETA1)*((ONED-X)**ETA2) | |
30 | RETURN | |
31 | END |