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- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 1970 The American Physical Society
- ISSN
- 1089-4918
- DOI
- 10.1103/PhysRevD.2.430
- Publisher site
- See Article on Publisher Site
Abstract
Results are presented on the properties of π N ( 980 ) , produced peripherally in the reaction K - + p → Y 1 * + ( 1385 ) + π N - ( 980 ) with a cross section of 9±3 μb at 5.5 GeV c . A search was made for π N ( 980 ) production via the decay of a higher-mass resonance. The cross section for the reaction K - + p → Λ + D 0 ( 1285 ) at 5.5 GeV c , with the subsequent decay D 0 → π N ( 980 ) + π , was <6 μb at the 70% confidence level. The mass and width of the π N ( 980 ) are 980±10 and 80±30 MeV, respectively. The dominant decay mode is π η , with the decay angular distribution having about a 10% probability of being isotropic. At the 70% confidence level, the branching ratio into π ρ relative to π η is <0.25, and the amount of any K - K 0 enhancement near 1 GeV, normalized to the π - η signal from π N - ( 980 ) decay, is <0.2.
Journal
Physical Review D – American Physical Society (APS)
Published: Aug 1, 1970