High-pTPhoton Production atpp¯Colliders

It is demonstrated by consistent next-to-leading order (NLO) calculations for isolated prompt photon production, performed within the small-cone approximation, that previous discrepancies between NLO expectations for the direct $\gamma$ production rates at small $p_T^{\gamma }\left(\gtrsim 11\mathrm{GeV}\right)$ and isolated prompt photon data are removed. This is not only due to the use of experimentally confirmed steep small-$x$ parton distributions, but also due to a consistent inclusion of isolated photonic fragmentation contributions in NLO. The latter contributions are even more important for fully inclusive predictions.