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Search for narrow exotic states in annihilations on 4He
Stockholm University, Faculty of Science, The Manne Siegbahn Laboratory .
Institute for Physics, University of Basle.
Kernforschungszentrum, Universität Karlsruche.
Stockholm University, Faculty of Science, The Manne Siegbahn Laboratory .
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1984 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 138, no 1-3, 235-240 p.Article in journal (Refereed) Published
Abstract [en]

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.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-46058DOI: 10.1016/0370-2693(84)91907-5OAI: oai:DiVA.org:su-46058DiVA: diva2:371388
Available from: 2010-11-20 Created: 2010-11-20 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Search for rare neutral two-body channels in the pp annihilation at rest: performed by measurments of high energy γ-rays using a modular NaI(Tl)-spectrometer
Open this publication in new window or tab >>Search for rare neutral two-body channels in the pp annihilation at rest: performed by measurments of high energy γ-rays using a modular NaI(Tl)-spectrometer
1986 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: Tekniska högskolan, 1986. 68 p.
National Category
Physical Sciences
Research subject
Physics
Identifiers
urn:nbn:se:su:diva-46099 (URN)91-7170-986-X (ISBN)
Public defence
1986-03-07, Kollegiesalen, Vallhallavägen 79, Stockholm, 10:00 (English)
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Supervisors
Available from: 2010-11-22 Created: 2010-11-20 Last updated: 2010-11-24Bibliographically approved

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