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proton-beryllium TOTAL cross section ( 278 mb ) was used for normalization.
Proton-beryllium TOTAL (???) cross section ( 278 mb ) was used for normalization.
Differential cross sections have been measured for π − p elastic scattering at laboratory momenta in the range 1.2 to 3.0 GeV/ c for the c.m. range 0.97 > cos θ ∗ > −0.98 . The corresponding mass range is 1.78 to 2.56 GeV/ c 2 . The data was obtained from a counter experiment in which the scattered pions and protons were detected in coincidence by arrays of scintillation counters.
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The p¯p elastic-scattering differential cross section shows a minimum at t∼0.5 (GeV/c)2 and a secondary maximum at t∼0.9 (GeV/c)2. The total cross section for the annihilation process p¯+p→π−+π+ is 6.6±3.5 μb; the cross section for p¯+p→K−+K+ is <2.2 μb.
'1'.
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