Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 48: Poster
HK 48.1: Poster
Mittwoch, 25. März 2015, 17:00–19:00, C/Foyer
Studies on the reaction pd → 3Heπ0 at WASA-at-COSY* — •Karsten Sitterberg, Nils Hüsken, Florian Bergmann, Kay Demmich, and Alfons Khoukaz — Institut für Kernphysik, WestfälischeWilhelms-Universität Münster, Germany
The limited database for the total cross sections of the pd → 3Heη reaction presents unexpected fluctuations in the excess energy range of 20-60 MeV.
In order to examine these variantions and to look for an underlying structure in the cross sections, a beam time at the WASA-at-COSY installation was performed in May 2014. The 15 different momenta for the proton beam used ranged from pp = 1.60 GeV/c to pp = 1.74 GeV/c, i.e. Q=13.6 MeV−80.9 MeV for the 3Heη-reaction. In order to obtain total and differential cross sections, the luminosities for the different beam momenta have to be determined. This can be done via the reconstruction of the normalisation reaction pd → 3Heπ0 and its angular distributions.
First analysis results of the data obtained at the WASA-at-COSY beam time will be presented and discussed.
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*Supported by FFE program of the Forschungszentrum Jülich and the
European Union Seventh Framework Programme (FP7/2007-2013) under grant
agreement n 283286.