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Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 65: Hadronenstruktur und -spektroskopie

HK 65.3: Talk

Thursday, March 7, 2013, 14:45–15:00, HSZ-304

Search for ω-mesic states — •Stefan Friedrich — II. Physikalisches Institut, Gießen

Experiments searching for the existence of ω-mesic states, using the tagged photon beam at the ELSA accelerator in Bonn, are presented. The combined setup of the Crystal Barrel and MiniTAPS detector systems, which form a 4π electromagnetic calorimeter, was used for detecting the possible ω-mesic states via the ω→π+γ decay mode. The recoiling proton of the γ+p→ω+p reaction was identified with an aerogel Cherenkov detector and the forward angle spectrometer MiniTAPS. Two experiments on a carbon target have been performed as well as a reference measurement on LH2. A comparison of the experimental results with theoretical predictions indicates a weakly attractive or even repulsive ω-nucleus potential.
Funded by DFG (SFB/TR16)

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