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arXiv · hep-ph/9510222

Ioffe-time distribution of quarks in the photon

S. Hofmann·L. Mankiewicz·A. Schäfer
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Abstract

We have analysed the Ioffe-time distribution of quarks in virtual photons using Operator Product Expansion of the correlation function that determines the matrix element of the corresponding quark string operator. The distribution for a transversally polarised photon admits a spectral representation which can be continued to the on-shell region $p^2 =0$. The resulting model Ioffe-time distribution turns out to be larger than parametrisations of the available $F_2^γ$ data. This result is linked to the slope of the quark distribution at the origin, which comes out too large as well.

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S. Hofmann, L. Mankiewicz, A. Schäfer. 1995-10-04. Ioffe-time distribution of quarks in the photon. https://doi.org/10.1007/s002180050383

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