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Elastic scattering of. pi. /sup -/, K/sup -/, and p-bar from hydrogen at 8 and 16 GeV/c. [Differential cross sections]

Journal Article · · Phys. Rev., D; (United States)
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In a single-arm spectrometer experiment, high-precision measurements of dsigma/dt for ..pi../sup -/p, K/sup -/p, and p-barp elastic scattering have been made at 8 and 16 GeV/c. The ..pi../sup -/p data show rich structure at 8 GeV/c, indicative of strong non-Pomeron contributions, while the 16-GeV/c data are much smoother. For -t > or approx = 1 (GeV/c)/sup 2/ there is a strong s dependence, while there is very little for -t < 1 (GeV/c)/sup 2/. For p-barp scattering the forward region is smoothly diffractive for -t < 0.4 (GeV/c)/sup 2/ and shows antishrinkage. The exponential slope parameter b is measured to be 12.36 +- 0.04 (GeV/c)/sup -2/ at 8 GeV/c and 11.40 +- 0.04 (GeV/c)/sup -2/ at 16 GeV/c. The structure near -t = 0.6 (GeV/c)/sup 2/ seen at lower energies is still obvious at 16 GeV/c. The K/sup -/p data show some structure at 8 GeV/c, but can be represented adequately by a quadratic exponential form. At 16 GeV/c the K/sup -/p angular distribution shows antishrinkage and lies above the 8-GeV/c cross section for 0.11 < -t < 0.8 (GeV/c)/sup 2/.
Research Organization:
Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213
OSTI ID:
7304497
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 15:11; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645103 -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Strong Interactions &amp; Baryon &amp; Meson Properties
645104* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
GEV RANGE
GEV RANGE 01-10
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
INTERACTIONS
KAON MINUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
KINETICS
LINEAR MOMENTUM
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PROTON-ANTIPROTON INTERACTIONS
QUANTUM NUMBERS
REACTION KINETICS
SCATTERING