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Energy Dependence of the Phase Shifts in Pion-Proton Scattering
Phys. Rev. 100, 288 – Published 1 October, 1955
DOI: https://doi.org/10.1103/PhysRev.100.288
Abstract
It is shown that all pion-proton scattering data up to 300 Mev can be fit within limits of experimental error by using the -waves linearly extrapolated from the low-energy slopes of and . All other phase shifts are assumed zero except which is given the energy dependence proposed by Chew and Low, . The two constants in the energy dependence fit the initial slope of as determined from low-energy experiments and make go through 90° at 192 Mev. According to the cutoff theory this determines a , corresponding to a pion-nucleon interaction of much shorter range than . A theoretical implication of the fit proposed here is that also the -wave interaction range is less than
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Omitted endnote