(p, 4He) Elastic scattering at 350, 650, 1050 and 1150 MeV

Abstract Angular distributions of p- 4 He elastic scattering differential cross sections have been measured at 350, 650, 1050 and 1150 MeV, in regions of four-momentum transfer squared t = 0.02–0.71 (GeV/ c ) 2 . These new measurements confirm the absence of a pronounced first diffraction minimum. New theoretical analyses are also presented.