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Preliminary results on Y *1 and K* production in π-p collisions

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Il Nuovo Cimento (1955-1965)

Summary

One hundred ninety-four cases of π− + p→ hyperon + kaon + π have been observed in liquid hydrogen. Analysis shows evidence for the production of « K* » excited mesons in association with Σ- and Σ0, but not with λ0. Y *1 production in association with kaons is also observed. The Y *1 appears to be strongly polarized. The data suggest that the Y *1 has spin =1/2 and negative parity with respect to the λ0, but the results are not statistically conclusive.

Riassunto

Si sono osservati hell idrogeno liquido 194 casi di reazione π− + p→ iperone+kaone+π. Questa analisi dà le prove di una produzione di mesoni eccitati « K* » associati a Σ- e Σ0, ma non a λ0. Si osserva anche produzione di Y *1 associati a kaoni. L Y *1 sembra essere fortemente polarizzato. I dati suggeriscono che l’Y *1 ha spin = 1/2 e parità negativa rispetto al λ0, ma i risultati non sono statisticamente conclusivi.

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Authors and Affiliations

  1. University of Wisconsin, Madison, Wis.

    A. R. Erwin, R. H. March & W. D. Walker

  2. Brookhaven National Laboratory, Upton, N. Y.

    A. R. Erwin, R. H. March & W. D. Walker

Authors
  1. A. R. Erwin
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  2. R. H. March
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  3. W. D. Walker
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Additional information

Work supported in part by the Atomic Energy Commission and the Wisconsin Alumni Research Fundation.

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Erwin, A.R., March, R.H. & Walker, W.D. Preliminary results on Y *1 and K* production in π-p collisions. Nuovo Cim 24, 237–247 (1962). https://doi.org/10.1007/BF02745646

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  • DOI: https://doi.org/10.1007/BF02745646

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