Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Hadronenstruktur und -spektroskopie III

HK 11.7: Vortrag

Montag, 21. März 2011, 18:15–18:30, C-2

Investigating the in-medium properties of the φ(1020). — •Olaf N. Hartmann — Stefan-Meyer-Institut der ÖAW, Wien, Österreich

The study of the in-medium properties of the φ(1020) has been already addressed by various experiments through different reaction channels. Deviations of the vacuum properties, like large φ-nucleon cross sections in nuclei, have been reported. The KEK PS-E325 experiment claims a reduced in-medium φ mass by 3.5 % [1]. To further examine this effect, the E29 experiment at J-PARC proposed to search for a φ meson bound state in nuclei. The reaction channel pp→φφ will be used to allow the trapping of one slow φ meson in the nucleus. A bound state can be identified by missing mass spectroscopy of the second φ meson. The first step of E29 will be the measurement of the cross section of pp→φφ in nuclear targets. In this contribution, the experimental concept will be presented. [1] R. Muto et al., PRL 98 (2007) 042501.