Accession Number:

AD0619116

Title:

SINGLE PI- PRODUCTION IN N-P COLLISIONS NEAR THRESHOLD,

Descriptive Note:

Revised ed.,

Corporate Author:

CHICAGO UNIV ILL ENRICO FERMI INST FOR NUCLEAR STUDIES

Personal Author(s):

Report Date:

1965-02-04

Pagination or Media Count:

15.0

Abstract:

Over 4000 n p to pion - pp events, obtained in a hydrogen bubble chamber, were analyzed. The kinetic energies of the initiating neutrons ranged from threshold to 440 MeV. The angular distributions, correlations, and energy partition of the final-state particles as well as the excitation function are presented. They are in excellent agreement with the phenomenological theory of Gell-Mann and Watson, except for the absence in the data of a sharp peak in the momentum partition distribution near the maximum allowed pion - momentum. The Ps amplitudes account for less than 1 of the total cross section. The intensities of the various types of transitions are determined. Examples of sets of amplitudes which yield these intensities are given. However, a large number of amplitudes contribute to the cross section, and the ambiguities are too great to allow evaluation of individual amplitudes. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE