Photon Structure Functions Beyind the SUSY Threshold

Details Photon Structure Functions Beyind the SUSY Threshold Photon Structure Functions Beyind the SUSY Threshold

2000-08-25

arxiv.org/abs/hep-ph/0008275v1

Eur.Phys.J.C18:593-599,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages (LATEX), 5 figures

Scientific paper

10.1007/s100520000552

We evolve virtual photon parton densities up to the SUSY threshold and higher using coupled inhomogeneous DGLAP differential equations. Reliable input parameterizations were available from the c-quark threshold. Limited $P^2$ ( target photon virtuality ) dependence is observed. The difference to the photon structure function is shown to be significant with the introduction of SUSY dependent splitting functions. A negligible difference is observed by letting the gluino mass enter after the squark mass. An effort is made to include the squark threshold effect in such a way that both the renormalization group equations are satisfied and the perturbative calculation is reproduced.

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