Spin Dependence of High-ElasticScattering
- 6 November 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 41 (19), 1257-1259
- https://doi.org/10.1103/physrevlett.41.1257
Abstract
We measured for from at 11.75 GeV/c. We used a 59%-polarized proton beam and a 71%-polarized proton target with both spins oriented perpendicular to the scattering plane. In these large- hard-scattering events, spin effects are very large and the ratio grows rapidly with increasing , reaching a value of 4 at 90° (c.m.). Thus, hard elastic scattering, which is presumably due to the direct scattering of the protons' constituents, may only occur when the two incident protons' spins are parallel.
Keywords
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