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Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Hadron Structure and Spectroscopy VII

HK 42.3: Talk

Wednesday, March 30, 2022, 14:45–15:00, HK-H8

A FAIR Phase-0 Project at MAMILuigi Capozza1, Alaa Dbeyssi1, Alexander Greiner1, Samet Katilmis1, Dong Liu1, Frank Maas1,2,3, Julian Moik1, Oliver Noll1,2, David Rodriguez Piñeiro1, Christoph Rosner1, and •Sahra Wolff11Helmholtz-Institut Mainz, Mainz, Germany — 2Institute of Nuclear Physics, Mainz, Germany — 3PRISMA Cluster of Excellence, Mainz, Germany

Within the FAIR phase-0 project, the use of FAIR equipment at other facilities before the completion of the civil construction is envisaged. The PANDA EMC is a good candidate for FAIR Phase-0, due to the advanced state of its development. In particular, the backward endcap (BWEC) of the PANDA EMC, which is developed and built at HIM in Mainz, could be ready by 2022, three years before its foreseen installation. Therefore, an experiment at the MAMI electron beam facility making use of the BWEC is envisaged.

The goal is to measure the π0 electromagnetic transition form factor in virtual Primakoff-kinematics via the electroproduction of a π0 in the Coulomb field of a heavy nucleus. To select this channel, the momentum distribution of the π0 needs to be measured by detecting the decay γ particles and the scattered electron in the EMC.

This talk will address the current status of the FAIR Phase-0 experiment at MAMI.

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