ELASTIC SCATTERING OF NEGATIVE PIONS BY PROTONS AT 230, 290, 370, AND 427 Mev
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- Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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
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TOTAL CROSS SECTIONS FOR NEGATIVE PIONS ON PROTONS AT 230, 290, 370, 427, AND 460 Mev
Charge-exchange scattering of negative pions by hydrogen at 230, 260, 290, 317 and 371 MeV