The quark and gluon distributions of the photon are determined in leading and higher order by imposing a vector-meson dominance (VMD) valencelike structure at a low resolution scale adopted from the pion. This leaves only one free parameter, not sufficiently constrained by VMD, to be fixed by experiment. Our predictions are in agreement with presently available data for F₂^γ(x,Q²). Simple parametrizations of the resulting parton distributions are presented in the range 10^-5x<1, 0.3Q²10⁶ GeV² as obtained from the leading- and higher-order evolution equations.
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Glück et al. (1992) studied this question.
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