Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 30: Hadron Structure and Spectroscopy V

HK 30.2: Talk

Wednesday, February 28, 2018, 14:30–14:45, HZO 50

Monte Carlo Event Generation with Bremsstrahlung in Deep-Inelastic Scattering — •Nicolas Pierre for the COMPASS collaboration — Universität Mainz, Mainz, Deutschland

In order to apply QED corrections in the extraction of 1-photon cross-sections in deep-inelastic scattering, radiation of real photons has to be taken into account. In the COMPASS experiment, the production of hadrons is studied by scattering 160 GeV muons off nucleons. In the analysis, the event kinematics are calculated using the measurement of the incoming and scattered muons. Radiation of a real photons before or after the deep-inelastic scattering leads to different kinematics at the interaction vertex. Thus, this radiation has to be taken care of in the Monte Carlo simulation used to obtain the acceptance. The DJANGOH event generator is chosen as it describes well our data and was modified to be used in the Monte Carlo simulation of the COMPASS apparatus. The results for radiative corrections factors for both inclusive and semi-inclusive channels as well as comparison between Monte-Carlo and real data will be discussed.