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Commit | Line | Data |
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21886bb6 | 1 | #include "pdf/pilot.h" |
2 | SUBROUTINE SFGAL(DX,DQ,DUV,DDV,DUB,DDB,DSB,DCB,DBB,DTB,DGL) | |
3 | C | |
4 | C******************************************************************** | |
5 | C* * | |
6 | C* Parametrization of parton distribution functions * | |
7 | C* in the photon (LO analysis) - full solution of AP eq.! * | |
8 | C* * | |
9 | C* authors: H.Abramowicz, E. Gurvich and A.Levy (GAL) * | |
10 | C* /hep-ph/9711355/ * | |
11 | C* * | |
12 | C* Prepared by: * | |
13 | C* Dr E. Gurvich * | |
14 | C* Tel Aviv University * | |
15 | C* e-mail: gurvich@post.tau.ac.il * | |
16 | C* * | |
17 | C* Modified by: * | |
18 | C* H. Plothow-Besch/CERN-PPE * | |
19 | C* * | |
20 | C******************************************************************** | |
21 | C | |
22 | C...LAMBDA=0.2 GeV, Nf=4 (i.e. xb=0) | |
23 | C...range of validity: | |
24 | C... 10**-4 < X < 1 | |
25 | C... 4(1) < Q2 < 10**5 GeV**2 | |
26 | C | |
27 | #include "pdf/impdp.inc" | |
28 | #include "pdf/expdp.inc" | |
29 | + DX,DQ,DUV,DDV,DUB,DDB,DSB,DCB,DBB,DTB,DGL, | |
30 | + XPDF(-6:6), X, Q, Q2 | |
31 | C | |
32 | X = DX | |
33 | Q = DQ | |
34 | Q2 = Q*Q | |
35 | CALL PHGAL(X,Q2,XPDF) | |
36 | C | |
37 | DDV = XPDF(1) | |
38 | DUV = XPDF(2) | |
39 | DDB = XPDF(-1) | |
40 | DUB = XPDF(-2) | |
41 | DSB = XPDF(-3) | |
42 | DCB = XPDF(-4) | |
43 | DBB = XPDF(-5) | |
44 | DTB = XPDF(-6) | |
45 | DGL = XPDF(0) | |
46 | C | |
47 | RETURN | |
48 | END |