Download QCDNUM16: A fast QCD evolution program

8
x
3
(1)
CL,g (x) = 4f x(1 − x)
4
(1)
(1)
C3,q (x) = C2,q − (1 + x).
3
(1)
CL,q (x) =
(45)
(1)
Notice the ‘+’ prescription in C2,q : a non-singlet F2 structure function, for instance, is thus
given by:
(
)
Z 1
Z x
αs
dy
(1)
(1)
ns
ns
ns
ns
ns
F (x) = xq (x) +
x
[yq (y) − xq (x)] C2,q (x/y) − xq (x)
dyC2,q (y) . (46)
2
2π
x y
0
References
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M. Virchaux, Ph. D. Thesis, Université de Paris-VII (1988).
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L.N. Lipatov, Sov. J. Nucl. Phys. 20 (1974) 181;
G. Altarelli and G. Parisi, Nucl. Phys. B126 (1977) 297.
[7] W. Furmanski and R. Petronzio, Z. Phys. C11 (1982) 293.
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[9] W. Furmanski and R. Petronzio, Phys. Lett. 97B (1980) 437.
[10] G. Ingelman and R. Rückl, Z. Phys. C44 (1989) 291;
J. Blümlein et al., Z. Phys. C45 (1990) 501;
R. G. Roberts, ‘The Structure of the Proton’, Cambridge University Press (1990).
[11] A.D. Martin, W.J. Stirling and R.G. Roberts, Phys. Lett. B266 (1991) 173.
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therein.
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