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Search for narrow signals in the [gamma]-spectrum from [Proton-antiproton] annihilation at rest
Stockholm University, Faculty of Science, The Manne Siegbahn Laboratory .
Institute for Physics, University of Basle.
Stockholm University, Faculty of Science, The Manne Siegbahn Laboratory .
Stockholm University, Faculty of Science, The Manne Siegbahn Laboratory .
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1986 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 182, no 3-4, 405-408 p.Article in journal (Refereed) Published
Abstract [en]

The [gamma]-spectrum originating from pp[combining macron] annihilations at rest in liquid hydrogen was measured with two BGO spectrometers. A total of 24 ï¿œ 106[gamma]’s were accumulated. No narrow peaks indicating exotic states such as baryonium were observed. The upper limit for the branching ratio with 1040 [less-than-or-equals, slant] mx [less-than-or-equals, slant] 1770 MeV/c2 and with [lambda]x [less-than-or-equals, slant] 25 MeV/c2 is less than 10-3 with more than 99.96% confidence.

Place, publisher, year, edition, pages
1986. Vol. 182, no 3-4, 405-408 p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-46056DOI: 10.1016/0370-2693(86)90117-6OAI: oai:DiVA.org:su-46056DiVA: diva2:371409
Available from: 2010-11-20 Created: 2010-11-20 Last updated: 2017-12-12Bibliographically approved

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