Isolated photons in perturbative QCD
نویسنده
چکیده
I present a definition of the cross section for the production of an isolated photon plus n jets which only depends upon direct photon production, and it is independent of the parton-to-photon fragmentation contribution. This prescription, based on a modified cone approach which implements the isolation condition in a smooth way, treats in the same way quarks and gluons and can be directly applied to experimental data in hadron-hadron, photon-hadron and ee collisions. The case of several, isolated photons in the final state can also be dealt with in the very same way. Work supported by the Swiss National Foundation.
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