Charmed-baryon interpretation ofΛ¯π−π−π+andΛ¯π−π−π+π±peaks
- 1 January 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 15 (1), 157-165
- https://doi.org/10.1103/physrevd.15.157
Abstract
The and peaks recently discovered in photoproduction are interpreted as charmed antibaryons. Specifically it is suggested that the is the charmed analog of and decays weakly. Quantum-number and spin-parity assignments are discussed briefly. We give isospin relations and predictions for the mean multiplicity of nonleptonic decay products, with special attention to channels detectable in existing experiments. A strategy for studying the dynamics of multibody nonleptonic decays is outlined and an interesting soft-pion theorem is recalled. Semileptonic decays are mentioned in passing. The is interpreted as an amalgam of the charmed analogs of and ; the shape of its two-peak structure is deduced. Prospects for the observation of additional charmed baryons are considered.
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