K. Nield

Measurement of the total cross-section difference for pp scattering in longitudinal spin states

Abstract We have measured the total cross-section difference for pp scattering in initial spin states parallel to the beam direction at beam momenta of 1.17, 1.47, 1.69, 1.97 and 2.49 GeV/ c . This measurement was done in a standard transmission experiment. A striking energy dependence is observed with a maximum difference of −16.9 mb at P lab = 1.47 GeV/ c .

Suggestion for a dibaryon resonance in the pp system

Abstract The existence of a diproton resonance is indicated by the energy dependence of Legendre expansion coefficients of P d σ d Ω for pp elastic scattering and the structure appearing in the data of Δσ L = σ Tot (⇄) − σ Tot (→). The properties of such a resonance are described.

A ZGS beam transport for transverse or longitudinally polarized protons

Abstract A combination of dipole magnets and superconducting solenoid is utilized to transform the spin direction of transversely polarized protons from the Argonne ZGS for use in proton-proton scattering experiments.

Measurement of the polarization in backward-angle π−p elastic scattering at 2.93 and 3.25 GeV/c

Abstract Polarization in π − p elastic scattering, with emphasis over the backward region, has been measured at 2.93 and 3.25 GeV/ c . We observe large changes in polarization compared with existing data above and below these energies. Our data may be useful in determining the properties of resonances and in understanding baryon exchanges.