Elsevier

Nuclear Physics B

Volume 56, Issue 1, 21 May 1973, Pages 15-45
Nuclear Physics B

Strange particle production from πp interactions at 1.69 GeV/c

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Abstract

The three-body final states Σ±πK0, Σ0π0K+ and Λπ0K+0 produced from πp interactions at 1.69 GeV/c are examined. The quasi-two-body state Λ(1405)K0 is discussed in detail. In particular, the spin of Λ(1405) is determined, via the method of Byers and Fenster, to be consistent with 12. The Σ±π mass spectrum is compared to that produced by various zero-range and effective-range parametrizations and the Λ(1405) is found to have a mass of 1405 MeV and width of 45–55 MeV. Production and decay characteristics of the quasi-two-body states Σ(1385)0K0 are reported.

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    Work supported by the US Atomic Energy Commission.

    Present address: Bell Telephone Laboratories, Holmdel, New Jersey.

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