NLO photon parton parametrization using ee and ep data

An NLO photon parton parametrization is presented based on the existing $F_2^{\gamma }$ measurements from $e^{+}{e}^{-}$ data and the low-$x$ proton structure function from $ep$ interactions. Also included in the extraction of the NLO parton distribution functions are the dijets data coming from $\gamma p \to j_1

• j_2 +X$. The new parametrization is compared to other NLO parametrizations.