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TRIPP 1962

Tripp, R.D.; Watson, M.B.; Ferro-Luzzi, M.;
Determination of the Σ Parity
Phys. Rev. Lett. 8 (1962) 175;

Motivation
In a previous Letter we reported a hydrogen-bubble-chamber experiment on the K^–p interaction in the vicinity of 400 MeV/c incident K^– momentum. The existence of an excited hyperon of 1520 MeV mass and 16 MeV full width was established; the state was found to have isotopic spin 0, spin 3/2, even parity with respect to K^–p, and a overline KN : Σ π : Λ 2 π branching ratio of 3:5:1. In this Letter we report the study of the angular distributions and polarizations of the different Σ π charge states, from which we conclude that the KpΣ parity is odd. (Extracted from the introductory part of the paper.).

Accelerator LBL Detectors HBC-25IN

Related references
See also
M. Ferro-Luzzi, R. D. Tripp, and M. B. Watson, Phys. Rev. Lett. 8 (1962) 28;
S. Minami, Progr. of Theor. Phys. 11 (1954) 213;
M. Nauenberg and A. Pais, Phys. Rev. 123 (1961) 1058;
E. P. Wigner, Phys. Rev. 98 (1955) 145;
E. F. Beall et al., Phys. Rev. Lett. 7 (1961) 285;
R. H. Capps, Phys. Rev. Lett. 6 (1961) 375;
M. M. Block et al., Phys. Rev. Lett. 3 (1959) 291;
M. Gell-Mann, Phys. Rev. 106 (1957) 1296;
J. Schwinger, Ann.Phys. 2 (1957) 407;
A. Pais, Phys. Rev. 110 (1958) 574;
R. W. Birge and W. B. Fowler, Phys. Rev. Lett. 5 (1960) 254;

Reactions

K– p Σ– πo

Particles studied

Σ

qn

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Determination of the Σ parity.

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