Search for η-mesic nuclei in a recoil-free transfer reaction
No Thumbnail Available
Date
2009-01-05
External link to pdf file
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=58249100188&origin=inward
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
We have studied the reaction p+Al27 → He3+p+π-+X at recoil-free kinematics. An η meson possibly produced in this reaction would be thus almost at rest in the laboratory system and could therefore be bound with high probability, if nuclear η states exist. The decay of such a state through the N*(1535) resonance would lead to a proton-π- pair emitted in opposite directions. For these conditions we find some indication of such a bound state. An upper limit of ≈0.5 nb is found. © 2009 The American Physical Society.