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On higher order corrections to photon structure functions

Jiri Chyla

hep-pharXiv:hep-ph/0512340

Abstract

The QCD corrections to photon structure functions are defined in a way consistent with the factorization scheme invariance. It is shown that the conventional DISγ factorization scheme does not respect this invariance and is thus deeply flawed. The origins of the divergent behavior of photonic coefficient function at large x are analyzed and recipe to remove it is suggested.

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