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1.	Adiels, L., et al. (author) Search for narrow signals in the γ-spectrum from pp̄ annihilation at rest 1986 In: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 182:3-4, s. 405-408 Journal article (peer-reviewed)abstract 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.

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Author/Editor: Hatzifotiadou, D. (1); Williams, M. C. S. (1); Repond, J. (1); Pavlopoulos, P (1); Carius, Staffan (1); Backenstoss, G. (1); show more...; Bergström, I. (1); Charalambous, S. (1); Cooper, M. D. (1); Kerek, A. (1); Tauscher, L. (1); Zioutas, K. (1); Adiels, L. (1); Findeisen, Ch. (1); Tröster, D. (1); show less...

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