Strangeness-Changing Leptonic Decay Rates for the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>Σ</mi></mrow><mrow><mo>±</mo></mrow></msup></mrow></math></span> Hyperons

J. Cole; J. Lee-Franzini; R. J. Loveless; C. Baltay; P. Franzini; R. Newman; H. Norton; N. Yeh

doi:10.1103/PhysRevD.4.631

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Strangeness-Changing Leptonic Decay Rates for the $Σ^{\pm}$ Hyperons

J. Cole, J. Lee-Franzini, and R. J. Loveless

C. Baltay, P. Franzini, R. Newman, H. Norton^*, and N. Yeh^†

State University of New York at Stony Brook, Stony Brook, New York 11790

Columbia University, New York, New York 10027

^*Present address: Bell Telephone Laboratory, Murray Hill, N. J.
^†Present address: State University of New York at Binghamton, Binghamton, N. Y.

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Phys. Rev. D 4, 631 – Published 1 August, 1971

DOI: https://doi.org/10.1103/PhysRevD.4.631

Abstract

The strangeness-changing leptonic branching ratios of the $Σ^{\pm}$ hyperon were determined from a stopping $K^{-}$ exposure in the BNL-Columbia 30-in. hydrogen bubble chamber. The ratio $\frac{(Σ^{-} \to ne ν)}{(all Σ^{-} decays)}$ is (0.97 ± 0.15) × $10^{- 3}$ , and the ratio $\frac{(Σ^{-} \to n μ ν)}{(all Σ^{-} decays)}$ is (0.38 ± 0.11) × $10^{- 3}$ . No evidence is found for $Δ S = Δ Q$ violations, and an upper limit for the ratio of decay rates [ $\frac{(Σ^{+} \to ne ν)}{(Σ^{-} \to ne ν)}$ ] is determined to be <12.6% with 95% confidence.

References (9)

F. Eisler, R. Plano, A. Prodell, N. Samios, M. Schwartz, J. Steinberger, M. Conversi, I. Mannelli, R. Santangelo, and V. Silvestrini, Phys. Rev. 112, 979 (1958)
N. Cabibbo, Phys. Rev. Letters 10, 531 (1963)
J. Canter, J. Cole, J. Lee-Franzini, R. J. Loveless, C. Baltay, J. Feinman, P. Franzini, R. Newman, and N. Yeh (unpublished)
R. J. Loveless, thesis, SUNY at Stony Brook, 1969 (unpublished)
W. E. Humphrey and R. R. Ross, Phys. Rev. 127, 1305 (1962)
F. Eisele, R. Engelman, H. Filthuth, W. Föhlisch, V. Hepp, E. Leitner, W. Presser, H. Schneider, and G. Zech, Z. Physik 225, 383 (1969)
N. V. Baggett et al., Phys. Rev. Letters 23, 249 (1969)
E. Bierman et al., Phys. Rev. Letters 20, 1459 (1968)
G. Ang et al., Z. Physik 228, 151 (1969)

[c1] F. Eisler, R. Plano, A. Prodell, N. Samios, M. Schwartz, J. Steinberger, M. Conversi, I. Mannelli, R. Santangelo, and V. Silvestrini, Phys. Rev. 112, 979 (1958)

[c2] N. Cabibbo, Phys. Rev. Letters 10, 531 (1963)

[c3] J. Canter, J. Cole, J. Lee-Franzini, R. J. Loveless, C. Baltay, J. Feinman, P. Franzini, R. Newman, and N. Yeh (unpublished)

[c4] R. J. Loveless, thesis, SUNY at Stony Brook, 1969 (unpublished)

[c5] W. E. Humphrey and R. R. Ross, Phys. Rev. 127, 1305 (1962)

[c6] F. Eisele, R. Engelman, H. Filthuth, W. Föhlisch, V. Hepp, E. Leitner, W. Presser, H. Schneider, and G. Zech, Z. Physik 225, 383 (1969)

[c7] N. V. Baggett et al., Phys. Rev. Letters 23, 249 (1969)

[c8] E. Bierman et al., Phys. Rev. Letters 20, 1459 (1968)

[c9] G. Ang et al., Z. Physik 228, 151 (1969)

Physical Review D

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Strangeness-Changing Leptonic Decay Rates for the $Σ^{\pm}$ Hyperons

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Strangeness-Changing Leptonic Decay Rates for the Σ± Hyperons

Abstract

References (9)

Strangeness-Changing Leptonic Decay Rates for the $Σ^{\pm}$ Hyperons