Real Part of the Proton-Proton Forward-Scattering Amplitude from 50 to 400 GeV
- 26 November 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 31 (22), 1367-1370
- https://doi.org/10.1103/physrevlett.31.1367
Abstract
From measurements of proton-proton elastic scattering at very small momentum transfers where the nuclear and Coulomb amplitudes interfere, we have deduced values of , the ratio of the real to the imaginary forward nuclear amplitude, for energies from 50 to 400 GeV. We find that increases from -0.157 ± 0.012 at 51.5 GeV to +0.039 ± 0.012 at 393 GeV, crossing zero at 280 ± 60 GeV.
Keywords
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