Search for narrow exotic states in annihilations on 4He
1984 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 138, no 1-3, 235-240 p.Article in journal (Refereed) Published
After having found evidence for narrow exotic states in p annihilation, the production of such states on a nuclear target was studied with similar techniques. The γ spectrum associated with annihilation on 4He at rest was measured. The spectrum shows two peaks, at energies of 161.9 and 203.0 MeV, corresponding to intermediate narrow states of masses which seem to be related to states found in p annihilations. The confidence is better than 4 σ.
Place, publisher, year, edition, pages
1984. Vol. 138, no 1-3, 235-240 p.
IdentifiersURN: urn:nbn:se:su:diva-46058DOI: 10.1016/0370-2693(84)91907-5OAI: oai:DiVA.org:su-46058DiVA: diva2:371388