Study of the 1450-Mev pπ+π- Enhancement in the Reaction K+p-->K+π+π-p at 5.5 BeV/c
Abstract
A highly peripheral pπ+π- enhancement centered near 1450 MeV, observed in K+p-->K+π+π-p at 5.5 BeV/c, is shown to be consistent with a Δ++π- system with I=12. We observe a large asymmetry in the Δ++π- angular distribution which is not consistent with a pure resonant effect. Dissociation-type models fit the data reasonably well when cuts are made on the K+π- mass, and this is interpreted as evidence for diffractive K+π- virtual scattering in this K+π- mass region.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 1969
- DOI:
- 10.1103/PhysRevLett.22.39
- Bibcode:
- 1969PhRvL..22...39A