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Search for narrow signals in the γ-spectrum from pp̄ annihilation at rest
Research Institute of Physics, Stockholm.
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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 γ-spectrum originating from pp̄ annihilations at rest in liquid hydrogen was measured with two BGO spectrometers. A total of 24 × 10 6 γ's were accumulated. No narrow peaks indicating exotic states such as baryonium were observed. The upper limit for the branching ratio p p ̄ → γ + X with 1040 ≤ m x ≤ 1770 MeV/c 2 and with λ x ≤ 25 MeV/c 2 is less than 10 -3 with more than 99.96% confidence. © 1986.

Place, publisher, year, edition, pages
Elsevier, 1986. Vol. 182, no 3-4, 405-408 p.
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Physical Sciences
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URN: urn:nbn:se:lnu:diva-28486DOI: 10.1016/0370-2693(86)90117-6OAI: oai:DiVA.org:lnu-28486DiVA: diva2:643761
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Source: Scopus

Available from: 2013-08-28 Created: 2013-08-26 Last updated: 2017-12-06Bibliographically approved

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Carius, Staffan

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