Measurements of energy behaviour of spin-dependent np observables over a GeV region. Results and prospects. Dubna “DELTA—SIGMA” experiment

Abstract

A A8'7 V.L Sharov et el.New data on the spin-dependent np observables measured with quasi-monochromatic polarized neutron beam in the energy region from 1.2 to 3.7 GeV are presented. Further measurements of np scattering observables using the JINR LHE polarization facility (longitudinal and transverse polarized neutron beams and a polarized proton target) are discussed. The aim of these studies is to determine the imaginary and real parts of the forward scattering amplitudes for np and for isospin I = 0 systems above 1.1 GeV.