ELASTIC-DIFFERENTIAL CROSS SECTION OF $pi$$sup +$ + p AT 1.5, 2.0, AND 2.5 Bev/c

Journal Article · Mon Apr 15 00:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.130.762· OSTI ID:4737951

Cook, V; Cork, B; Holley, W R; Perl, M L

Elastic-scattering angular distributions are measured for rature of the d /sup +/ + p scattering at 1.5, 2.0, and 2.5 Bev/c, using spark chambers to detect scattered pions and protons. A bump that decreases in amplitude with increasing momentum is observed in the backward hemisphere in the 1.5- and 2.0Bev/ c distributions, but is not observed in the 2.5-Bev/c distributions. It appears reasonable to attribute this phenomenon to the 1.46-Bev/c resonance observed in the rature of the d /sup +/ + p total cross section. The data are compared with rature of the d /sup -/ + p data and are found to support the theoretical prediction that the scattering cross sections for both charge states should become equal at high energies. The angular distributions are fit with a power series in cos F * and the extrapolated values for the scattering cross section in the backward direction are compared with the calculation of the neutronexchange pole contribution to the cross section. The elementary'' neutron-pole term contribution is calculated to be 90 mb/sr at 2.0 Bev/c, in violent disagreement with the extrapolated value, sup 14/ recover 0.5 mb/sr. (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-17-019126
• OSTI ID: 4737951
• Report Number(s): UCRL-10391; 0031-899X
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 130; ISSN PHRVA
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CROSS SECTIONS
INTERACTIONS
MEASURED VALUES
MOMENTUM
NEUTRONS
NUMERICALS
PHYSICS
PIONS
PROTONS
RESONANCE
SCATTERING
SPARK CHAMBERS