Radiative Corrections in the OLYMPUS Experiment

Details Radiative Corrections in the OLYMPUS Experiment Radiative Corrections in the OLYMPUS Experiment

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..aprw14005s&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #W14.005

Physics

Scientific paper

The OLYMPUS Experiment, underway at DESY, in Hamburg, Germany, is measuring the ratio between the electron-proton and positron-proton elastic scattering cross-sections in order to determine the contribution from two-photon exchange. A deviation in the ratio from unity is caused both by the hard two-photon scattering of interest but also by soft radiative effects which must be accounted for. A simulation has been developed to generate particles according to different radiative models and to propagate these particles via a GEANT4 Monte Carlo through the OLYMPUS detector. This will convolve both the cross-sections with effects such as detector resolution and efficiency. A description of the radiative correction procedure, as well as the latest results from the analysis will be presented.

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