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HK: Fachverband Physik der Hadronen und Kerne
HK 37: Hadron Structure and Spectroscopy 7
HK 37.5: Talk
Tuesday, March 24, 2015, 18:15–18:30, T/SR19
Investigation of different normalization reactions for dp collisions at ANKE* — •Christopher Fritzsch, Daniel Guderian, Malte Mielke, Michael Papenbrock, Daniel Schröer, and Alfons Khoukaz — Institut für Kernphysik, WestfälischeWilhelms-Universität Münster, Germany
1em
Studies on the total cross sections of the reaction d+p
→3He+η are of special interest since they differ
strongly from a pure phase space behaviour near threshold. This behaviour could be an
indication for the presence of a quasi bound state of the
η3He-system.
New high precision data from the ANKE spectrometer at
the accelerator ring COSY at the Forschungszentrum Jülich allow the
extraction of precise total and differential cross section values for the η
production up to an excess energy of Q= 15 MeV. Therefore, a careful luminosity determination was realized via
dp-elastic scattering for 18 beam momenta in a range between
3120.17 MeV/c ≤ pd ≤ 3204.16 MeV/c. Furthermore, to verify
the results of the dp-elastic scattering an independent normalization channel d+p →
d+π0+pspec was used. The method and recent results for both channels will
be presented and discussed.
*This work has been supported by the COSY-FFE program of the Forschungszentrum
Jülich.