Measurements of π −p elastic scattering in the coulomb interference region at high energies

Abstract

The differential cross section has been measured at 30, 50, 80, 100, 120 and 140 GeV/ c for 0.002 < | t| < 0.04 ( GeV/ c) 2. The results show that the π −p real part goes from negative to positive values below 80 GeV/ c. The slope parameter in the t-region measured is significantly higher than what has been found − t = 0.2 (GeV/ c) 2.