Accession Number : AD0463448

Title :   POSITRON-PROTON SCATTERING,

Corporate Author : STANFORD UNIV CA HIGH ENERGY PHYSICS LAB

Personal Author(s) : Browman, A. ; Liu, F. ; Schaerf, C.

Report Date : 08 MAR 1965

Pagination or Media Count : 28

Abstract : The importance of two-photon exchange in elastic electron-proton scattering was investigated by measuring the ratio of positron-proton to electron-proton scattering. Four momentum transfers as large as 0.756 (BeV/c) to the 2nd power (19.5 F to the -2nd power) were used. The data indicate that two-photon effects are 4.0 = 1.5% larger than those predicted by the radiative corrections at the highest momentum transfers attained in these experiments. The two-photon corrections predicted, using a static charge distribution, fit the data well at lower momentum transfers and forward angles but appear to be small at higher momentum transfers and backward angles. (Author)

Descriptors :   (*PROTON SCATTERING, POSITRONS), ELASTIC SCATTERING, PHOTONS, ELECTRONS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE