Measurement of prompt photon in sqrt(s)=200GeV pp collisions

Details Measurement of prompt photon in sqrt(s)=200GeV pp collisions Measurement of prompt photon in sqrt(s)=200GeV pp collisions

2005-01-25

arxiv.org/abs/hep-ex/0501066v1

Physics

High Energy Physics

High Energy Physics - Experiment

4pp. To appear in the proceedings of 16th International Spin Physics Symposium (SPIN 2004), Trieste, Italy, 10-16 Oct 2004

Scientific paper

This report presents the preliminary result for the prompt photon production cross section in proton-proton collisions in the mid-rapidity region using the PHENIX detector. The NLO pQCD calculation is in good agreement with the data. The measurement was made with and without an isolation cut. The isolation cut significantly improves the signal purity without reducing the signal yield. This is an important step for the future spin asymmetry measurement.

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