Next-to-leading-logarithm calculation of direct photon production

A method for calculating the production of direct photons beyond the leading-logarithm approximation has been developed, utilizing a combination of analytic and Monte Carlo integration methods. The method is described and examples are given, including a comparison with experimental results for the inclusive single-photon invariant cross section and the photon-plus-jet cross section. The flexibility of the Monte Carlo technique makes it straightforward to calculate a variety of observables and to take into account experimental cuts while still retaining the next-to-leading-logarithm terms.