Search for the 4He-eta bound state in dd->(4He-eta)_{bound}->3He n pi0 and dd->(4He-eta)_{bound}->3He p pi- reactions with the WASA-at-COSY facility

Abstract

In November 2010, the search for the 4He-η bound state was per formed with high statistics and high acceptance with the WASA-at-COSY facility using a ramped beam technique. The signature of eta - mesic nuclei is searched for in the measured excitation functions for the two reaction channels: dd ->3He n pi0 and dd ->3He p pi- near the eta production threshold. This report includes the description of the experimental method and the status of the data analysis.

4 pages

References in corpus (4)

• Measurement of the dp -->3He eta reaction near threshold
• Is there an eta-3He quasi--bound state ?
• Formation of eta-prime(958)-mesic nuclei by (p,d) reaction
• In-medium antikaon and eta-meson interactions and bound states

Cited by in corpus (1)

• Unresolved issues in the search for eta-mesic nuclei