SMuK 2021 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 14: Hadron Structure and Spectroscopy III
HK 14.2: Vortrag
Dienstag, 31. August 2021, 17:00–17:15, H3
Analysis of COMPASS data on DVCS — •Johannes Giarra — on behalf of the COMPASS collaboration - Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Johann-Joachim-Becher-Weg 45, 55099 Mainz
In 2016 and 2017 a measurement of the exclusive single photon production was performed at the M2 beamline of the CERN SPS, scattering a 160 GeV positive and negative charged muon beam off a liquid hydrogen target.
During the measurement all particles participating in the process were measured. To perform an exclusive measurement
the COMPASS spectrometer was supplemented by an additional electromagnetic calorimeter to increase the acceptance for the detection of
large angle photons. The recoiling protons were measured by a time of flight (TOF) detector surrounding the target.
The talk will summarize the current status of the analysis to determine the cross section of the Deeply Virtual Compton Scattering
(DVCS). Thereby the focus will be on determining the Bethe-Heitler contribution to the cross section as well as the method to determine and remove the π0 contamination from the exclusive single photon sample.