PION PRODUCTION IN PION-NUCLEON COLLISIONS
The single production of pions occurring in pion-nucleon collisions at incident pion energies beiow ~1.5 Bev has been considered in terms of the inelastic excitation of the nucleon to the isobaric state with isotopic spin and angular momentum = 3/2, previously identified with the resonant state in the low- energy pion-nucleon scattering. An associated separate recoil pion accompanies the isobar, and conserves energy and momentum. The isobar subsequently decays into a nucleon and a pion. Expressions have been obtained for the branching ratios between the different reactions, pi /sup -/ + p yields pi /sup -/ + pi /sup +/ + n, and pi /sup / + pi /su p o/ + p, and for the separate energy spectra of the pi /sup +/, pi / sup o/, and pi /sup -/ mesons. Th e momentum distributions of the pions and recoil nucleons have been calculated at incident pion energies of 0.93 Bev and 1.37 Bev, and are generally in reasonable agreement with the experimental data available at these energies. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y.
- NSA Number:
- NSA-12-008159
- OSTI ID:
- 4343674
- 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- Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 109; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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