Inelastic π+n Interactions in the Center-of-Mass Energy Range 1.40-1.65 GeV
Abstract
The reactions π++n-->p+π++π- and π++n-->p+η have been studied as a function of the π+n center-of-mass energy in the range 1.40-1.65 GeV, using π+ interactions in deuterium and the impulse approximation. Within specified limits, the data are shown to be consistent with this approximation. The relative cross sections for π++n-->p+π++π- have been obtained at 13 points in the energy range, with a standard deviation of 4% at the center, rising to 10% at the extreme energies. There is a clear enhancement in the region of the N*(1470) and N*(1518) and the cross section rises steeply at the higher energies. The rapid rise and subsequent decay of the η-production cross section is confirmed. From the η-production angular distributions, evidence for the decay of the N*(1680) and N*(1688) into ηp is found, together with an indication that the N*(1470) may decay in this mode.
- Publication:
-
Physical Review
- Pub Date:
- July 1969
- DOI:
- 10.1103/PhysRev.183.1152
- Bibcode:
- 1969PhRv..183.1152L