Abstract
Proton-antiproton elastic scattering at CM energy 540 GeV has been studied in the t-range 0.04 < − t < 0.45 GeV 2. The data are well fitted by the form exp ( bt) with b = 17.1 ± 1.0 GeV −2 for | t| = 0.04 − 0.18 GeV su2 and b = 13.7 ± 0.2 ± 0.2 GeV −2 for | t| = 0.21−0.45 GeV 2. A luminosity measurement combined with the optical theorem gives σ tot = 67.6 ± 5.9 ± 2.7 mb and σ e1/ σ tot = 0.209 ± 0.018 ± 0.008.
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