Measurement of the Ratio of the Axial-Vector to the Vector Coupling in the Decay <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><mo>→</mo><mi>n</mi><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow><mrow><mrow><mover><mrow><mi>ν</mi></mrow><mrow><mi>¯</mi></mrow></mover></mrow></mrow></math></span>

C. Baltay; J. Feinman; P. Franzini; R. Newman; N. Yeh; J. Canter; J. Cole; J. Lee-Franzini; R. J. Loveless

doi:10.1103/PhysRevD.5.1569

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Measurement of the Ratio of the Axial-Vector to the Vector Coupling in the Decay $Σ^{-} \to n e^{-} \bar{ν}$

C. Baltay, J. Feinman, P. Franzini, R. Newman, and N. Yeh^*

J. Canter^†, J. Cole, J. Lee-Franzini, and R. J. Loveless

Columbia University, New York, New York 10027

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

^*Present address: State University of New York at Binghamton, Binghamton, N. Y.
^†Present address: Tufts University, Medford, Mass.

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Phys. Rev. D 5, 1569 – Published 1 April, 1972

DOI: https://doi.org/10.1103/PhysRevD.5.1569

Abstract

From a sample of 393 $Σ^{-} β$ decays, we have selected 63 events in which a proton recoil from a neutron interaction in the chamber is observed. From the measured values of the electron-neutrino angle we conclude that for the $Σ^{-} \to n e^{-} \bar{ν}$ , $| \frac{g_{A}}{g_{V}} | = {0.29}_{- 0.29}^{+ 0.28}$ . This result is obtained from a maximum-likelihood calculation which includes the effect of a well-understood background of 27±6 events contained in our sample.

References (14)

N. Cabibbo, Phys. Rev. Letters 10, 531 (1963)
N. Cabibbo and P. Franzini, Phys. Letters 3, 217 (1963)
W. Alles, Nuovo Cimento 26, 1429 (1962)
L. Gershwin, Phys. Rev. Letters 20, 1270 (1968)
D. Bogert et al., Phys. Rev. D 2, 6 (1970)
J. Cole et al., Phys. Rev. D 4, 631 (1971)
J. Canter et al., Bull. Am. Phys. Soc. 14, 94 (1969)
J. Canter et al., Bull. Am. Phys. Soc. 15, 511 (1970)
R. Newman et al., in Proceedings of the International Conference on Advanced Data Processing for Bubble and Spark Chambers, Argonne National Laboratory, 1968, edited by R. J. Royston (Argonne National Laboratory, Argonne, Ill., 1968), p. 256
R. B. Marr and G. Rabinowitz, in Methods in Computational Physics, edited by B. Alder, S. Fernbach, and M. Rotenberg (Academic, New York, 1966), Vol. 5, p. 213
Omitted endnote
A. P. Colleraine et al., Phys. Rev. Letters 23, 198 (1969)
F. Eisele et al., Z. Physik 223, 487 (1969)
H. Ebenhoh et al., Z. Physik 241, 373 (1971)

[c1] N. Cabibbo, Phys. Rev. Letters 10, 531 (1963)

[c2] N. Cabibbo and P. Franzini, Phys. Letters 3, 217 (1963)

[c3] W. Alles, Nuovo Cimento 26, 1429 (1962)

[c4] L. Gershwin, Phys. Rev. Letters 20, 1270 (1968)

[c5] D. Bogert et al., Phys. Rev. D 2, 6 (1970)

[c6] J. Cole et al., Phys. Rev. D 4, 631 (1971)

[c7] J. Canter et al., Bull. Am. Phys. Soc. 14, 94 (1969)

[c8] J. Canter et al., Bull. Am. Phys. Soc. 15, 511 (1970)

[c9] R. Newman et al., in Proceedings of the International Conference on Advanced Data Processing for Bubble and Spark Chambers, Argonne National Laboratory, 1968, edited by R. J. Royston (Argonne National Laboratory, Argonne, Ill., 1968), p. 256

[c10] R. B. Marr and G. Rabinowitz, in Methods in Computational Physics, edited by B. Alder, S. Fernbach, and M. Rotenberg (Academic, New York, 1966), Vol. 5, p. 213

[c11] Omitted endnote

[c12] A. P. Colleraine et al., Phys. Rev. Letters 23, 198 (1969)

[c13] F. Eisele et al., Z. Physik 223, 487 (1969)

[c14] H. Ebenhoh et al., Z. Physik 241, 373 (1971)

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Measurement of the Ratio of the Axial-Vector to the Vector Coupling in the Decay $Σ^{-} \to n e^{-} \bar{ν}$

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Measurement of the Ratio of the Axial-Vector to the Vector Coupling in the Decay Σ−→ne−ν¯

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Measurement of the Ratio of the Axial-Vector to the Vector Coupling in the Decay $Σ^{-} \to n e^{-} \bar{ν}$