Parton distributions in the photon
Copyright policy )Parton distributions in the photon
We discuss in detail the photon structure function beyond the leading logarithm approximation. Of special concern is the factorization scheme and the hadronic input; we show how to naturally absorb large terms due to the MSbar factorization scheme in a modified hadronic component. The effect of the charm quark mass threshold is also discussed in relation to the phenomenology. A comparison with data shows that the modified hadronic component can be reasonably described by a VDM-type input.
26 pages, postscript files appended to the TEX file contain fig. 1,2,3, 5,6,7. Missing figures are sent on request , ENSLAPP-A-435-93-a and LPTHE Orsay 93-37-a
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences
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