Proton - Helium Elastic Scattering From 40-{GeV} to 400-{GeV}
Aug, 1978
31 pages
Published in:
- Phys.Rev.D 23 (1981) 1895
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Abstract: (APS)
The elastic proton-helium differential cross section has been determined for incident laboratory energies from 45 to 400 GeV in the range 0.003≤|t|≤0.52 (GeV/c)2 by means of the internal-gas-jet-target technique. The differential cross section drops 4-5 orders of magnitude to the first dip at |t|≃0.22 (GeV/c)2. The shrinkage in the slope of the differential cross section is found to be twice as fast as that in the proton-proton case. The slope parameter at |t|≃0 is described by the formula b=24+1.13lns, where b is in (GeV/c)−2 and s is in GeV2. The elastic proton-helium cross section is normalized to the known elastic proton-proton cross section using data taken with a helium and hydrogen mixture as a target. The proton-helium total cross section is determined from the optical theorem. The total cross section rises by 4% between 100 and 400 GeV. Results are presented on the real part of the elastic-scattering amplitude and on the total elastic cross section. The experimental differential cross sections are compared to Glauber-model predictions.- P LIGHT NUCLEUS: INTERACTION
- INTERACTION: P LIGHT NUCLEUS
- P LIGHT NUCLEUS: ELASTIC SCATTERING
- ELASTIC SCATTERING: P LIGHT NUCLEUS
- HELIUM
- P P: ELASTIC SCATTERING
- ELASTIC SCATTERING: P P
- DIFFERENTIAL CROSS SECTION: MOMENTUM TRANSFER
- MOMENTUM TRANSFER: DIFFERENTIAL CROSS SECTION
- DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE
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