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Measurement of $p \bar{p}$ Backward Elastic Scattering Cross-section From 406-{MeV}/$c$ to 922-{MeV}/$c$

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DOI: 10.1103/PhysRevLett.43.1901
OAI: oai:inspirehep.net:143684
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INSPIRE-HEP
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Abstract

The cross section for 180° elastic scattering of antiprotons by protons between 406 and 922 MeV/c has been measured. A single-arm spectrometer detected recoil protons corresponding to events with 〈cosθc.m.〉=−0.994. The regions of the reported resonances at 1936 and 2020 MeV were scanned in 10-MeV/c steps with a typical statistical error of ≈ 7% and an rms mass resolution of ±3 MeV. No narrow enhancements (Γ<10 MeV) were observed.

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