Study of the 3He-eta system in d-p collisions

Abstract

We have measured excitation functions for the d+p->3He+X, (X=pi0, eta) channels near the eta production threshold. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target. The excitation function for the reaction d+p->3He+pi0 does not show any structure which could originate from the decay of 3He-eta bound state. We measured also the threshold excitation curve for the d+p->3He+X process, however, contrary to the SATURNE results, we observe no cusp near the eta threshold.

Talk given at 18th International IUPAP Conference on Few-Body Problems in Physics, 21-26 August, 2006, Santos, Brazil, 4 pages, 6 figures, will be published in Nuclear Physics A

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Photoproduction of eta-mesic 3He
• Near-Threshold Production of $\eta$-Mesons
• The $\eta$-3N problem with separable interactions
• The $\eta {-}^3$He scattering length revisited
• Charge symmetry breaking as a probe for the real part of eta--nucleus scattering lengths

Cited by in corpus (4)

• Search for He-eta bound states with the WASA-at-COSY facility
• Search for the $\eta$ mesic ${}^3$He in the $pd\to dp{\pi }^0$ reaction with the WASA-at-COSY facility
• Status and Perspectives of the Search for Eta-Mesic Nuclei
• Luminosity determination for the proton-deuteron reaction using pd -> 3He eta channel with WASA-at-COSY detector