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HK: Fachverband Hadronen und Kerne
HK 67: Poster Session
HK 67.10: Poster
Thursday, March 19, 2009, 14:00–16:00, Audi-Max
Search for a0/f0(980) production in pd→3Heπ0η/π0π0 reactions with WASA-at-COSY — Markus Büscher1, Pavel Fedorets1,2, and •Chuan Zheng1,3 — 1Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany — 2Institute for Theoretical and Experimental Physics, Bolshaya Cheremushkinskaya 25, 117218 Moscow, Russia — 3Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China
The WASA-at-COSY facility is well suited to detect both strong (πη and ππ) and radiative (γ V, with V being a vector meson) decays of the light scalar mesons a0/f0(980). As a first test measurement, and in order to determine the light-scalar production cross sections in the pd→3AX process, the pd→3He(4γ) reaction has been measured. At a beam momentum of Pp=2.935 GeV/c masses MX of up to 1.2 GeV/c2 could be produced. We report on the status of the data analysis, in particular for the reaction channels pd→3He a0→3He(π0η) and pd→3He f0→3He(π0π0).
*Supported by FZ Jülich, BMBF, Wallenberg Foundation, CSC and HGF