Summary
Two characteristics of proton-antiproton scattering ρ(s)=ReF \(p\bar p\)/ImF \(p\bar p\) andT tot(s) are considered. Theoretical consideration is based on the analytical properties of the forward-scattering amplitudeF \(p\bar p\) (s). Experimental data on ρ and σtot atp L≤1 GeV/c have been analyzed, and a satisfactory description of ρ andT tot(s) has been achieved only when a quasi-nuclear state is assumed to exist in a\(p\bar p\) system. The mass of this state is close to 2m, wherem is the proton mass.
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Bykovsky, B.V., Meshcheryakov, D.V. & Meshcheryakov, V.A. Evidence for a bound state in\(p\bar p\) systemsystem. Nuov Cim A 104, 1381–1390 (1991). https://doi.org/10.1007/BF02789580
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DOI: https://doi.org/10.1007/BF02789580