ELASTIC SCATTERING OF NEGATIVE PIONS BY PROTONS AT 230, 290, 370, AND 427 Mev

Journal Article · Sat Apr 15 04:00:00 EST 1961 · Physical Review (U.S.) Superseded in part by Phys.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.122.655· OSTI ID:4029110

Goodwin, L K; Kenney, R W; Perez-Mendez, V

The elastic differential cross section for the scattering of negative pions by hydrogen was measured at laboratory-system pion kinetic energies of 230, telescope which discriminated against recoil protons and inelastic pions on the basis of range. Differential cross sections were obtained at nine angles for each energy and were fitted by a least-squares program to a series of Legendre polynomials. At the three higher energies, D waves are required to give satisfactory fits to the data. The real parts of the forward-scattering amplitudes calculated from this experiment are in agreement with the predictions of dispersion theory. The results of this experiment, in conjunction with data from other pion-nucleon scattering experiments, support the hypothesis of charge independence at these higher energies. (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-15-016506
• OSTI ID: 4029110
• Report Number(s): UCRL-9119-R; 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• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 122; ISSN PHRVA
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
COUNTERS
CROSS SECTIONS
DISPERSIONS
DISTURBANCES
ELASTIC SCATTERING
ELECTRIC CHARGES
ENERGY
ENERGY RANGE
ERRORS
HYDROGEN
INTERACTIONS
MATHEMATICS
MEASURED VALUES
NUCLEAR THEORY
PHYSICS
PIONS
PIONS-MINUS
PROTONS
QUANTUM MECHANICS
RECOILS
SCATTERING
SLOWDOWN
TARGETS