Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Hadron Structure and Spectroscopy 3

HK 18.6: Vortrag

Montag, 23. März 2015, 18:30–18:45, T/SR19

Search for polarization effects in the antiproton production process — •Dieter Grzonka — Forschungszentrum Jülich GmbH, 52425 Jülich, Germany

for the P349 collaboration

Polarized antiproton beams would allow more detailed studied in various topics of low and high energy antiproton physics experiments. There are a number of proposals how polarized antiprotons could be produced but mostly the expected intensity or polarization is very low or feasibility studies would require an enormous effort. A rather simple method for the preparation of a polarized antiproton beam would be the production process itself if it creates some polarization. In order to investigate polarization effects in the antiproton production process the angular distribution of elastically scattered antiprotons is measured which are produced in the interaction of the 24 GeV/c PS proton beam at CERN with a solid target. The measurement is done in the CNI region at small forward scattering angles for which the analyzing power is rather well known by reconstructing the tracks of primary and scattered antiprotons. The experimental setup will be presented and preliminary results will be shown.