Münster 2011 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 24: Hadronenstruktur und -spektroskopie VI

HK 24.4: Talk

Tuesday, March 22, 2011, 17:30–17:45, C-2

Meson production in coherent pd interaction — •Tatiana Azaryan and Vladimir Komarov — Joint Institute for Nuclear Research,141980,Dubna,Russia

The reaction p+d→ p+d+X was studied in the proton beam energy range of 0.8-2.0 GeV at small forward angles of the pd pair production. A peculiarity of the experiment is the large momentum transfer from the projectile to the target nuclei resulting in high lab momenta of the final deuterons: at 1.4 GeV beam energy the deuteron momenta are in the range of 0.6 to 2.0 GeV/c. The intense multimeson continuum includes, in particular, single pion, low-mass pion pair or eta-meson production which are well identified in the missing mass distribution. The deuteron-meson invariant mass distributions reveal broad quasi-resonance peaks consistent with the excitation of Δ(1232), N(1440), ΔΔ or N(1535) resonances in the intermediate state of the target two-nucleon system.