Backward Elasticπ+pScattering from 2.18 to 5.0 BeV/c

Abstract
Differential cross sections for π+p elastic scattering in the angular region 0.6cosθc.m.0.98 are presented for 13 incident pion momenta from 2.18 to 5.0 BeV/c. The striking features of the data are a backward peak at all momenta and a dip in the cross section at u0.17 for momenta between 2.75 and 5.0 BeV/c.