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Proton-proton elastic scattering at 400 GeV/c has been measured in the region 5.4<-t<14.4 GeV² with no sign of a second dip or "break." If the data are fitted by exp(At), the slope A decreases from 1.5±{}0.1 to 0.7±{}0.2 GeV^-2 over the range. At fixed t the 400-GeV/c cross sections are about 0.6 times those at 200 GeV/c in this t range. At fixed θc.m.=15^∘, dσdt∝s^-n where n=9.7±0.3.
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Conetti et al. (1978) studied this question.
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