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arXiv · 1702.06293

Measurement of the exclusive ${\pi}^0$ muoproduction cross section at COMPASS

Matthias Gorzellik
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Abstract

At COMPASS DVCS and DVMP processes are studied in order to probe the partonic structure of the nucleon by constraining GPD models. Extending beyond semi-inclusive deep inelastic scattering, the measurement of lepton-induced exclusive reactions enables the study of GPDs, which ultimately reveal the three dimensional picture of the nucleon and the decomposition of its total angular momentum. Exploiting the flavour filtering character of DVMP measurements, the COMPASS experiment is able to access different combinations of quark and gluon GPDs by determining the cross sections for various mesons. We report on the first extraction of the exclusive ${\pi}^0$ muoproduction cross section in the intermediate $x_{Bj}$ domain ranging from 0.01 to 0.15.

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Matthias Gorzellik. 2017-02-21. Measurement of the exclusive ${\pi}^0$ muoproduction cross section at COMPASS. https://arxiv.org/abs/1702.06293

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