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arXiv · hep-ph/9607370

New Parton Distribution Functions for the Photon

L. E. Gordon·J. K. Storrow
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Abstract

We present new improved parton distributions for the photon. We fit {\bf all} available data on the photon structure function, $F^γ_{2}(x,Q^2)$, with $Q^2\ge 3$ GeV$^2$, in order to determine the quark distributions. We also pay particular attention to the gluon distribution in the photon, $g^γ(x,Q^2)$, which has been poorly constrained in earlier analyses which only include structure function data. We use large $p_T$ jet production in $γγ$ collisions from TRISTAN to constrain $g^γ$. We also see what information can be gleaned from $γp$ collisions at HERA on $g^γ$ and on the quark distributions at large $x$, where there are no structure function data. We review future prospects of elucidating the parton distributions of the photon.

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L. E. Gordon, J. K. Storrow. 1996-07-18. New Parton Distribution Functions for the Photon. https://doi.org/10.1016/s0550-3213(97)00048-5

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