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Positron-Proton Scattering

Browman, A. ; Liu, F. ; Schaerf, C. ;
Phys.Rev. 139 (1965) B1079-B1085, 1965.
Inspire Record 944961 DOI 10.17182/hepdata.26686

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)2 (19.5 F−2) 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.

10 data tables
Table 1

Data recalculated from the data of Yount and Pine.

Table 2

Data recalculated from the data of Yount and Pine. RUN_1 and RUN_2 of the Yount and Pine experiment were separated by large time interval.

Table 3

Data recalculated from the data of Yount and Pine.

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