Precision Measurement of the Lifetime and Decay Branching Ratio of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>Λ</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span> Hyperon

C. Baltay; A. Bridgewater; W. A. Cooper; M. Habibi; N. Yeh

doi:10.1103/PhysRevD.4.670

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Precision Measurement of the Lifetime and Decay Branching Ratio of the $Λ^{0}$ Hyperon

C. Baltay, A. Bridgewater^*, W. A. Cooper, and M. Habibi

N. Yeh

Columbia University, New York, New York 10027
Brookhaven National Laboratory, Upton, New York 11973

State University of New York, Binghamton, New York 13901

^*Present address: University of California, Berkeley, California.

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Phys. Rev. D 4, 670 – Published 1 August, 1971

DOI: https://doi.org/10.1103/PhysRevD.4.670

Abstract

A precision measurement of the $Λ^{0}$ lifetime $τ_{Λ}$ and the branching ratio $R = \frac{(Λ \to p π^{-})}{(Λ \to all)}$ has been carried out. The results are $τ_{Λ} = (2.54 \pm 0.04) \times 10^{- 10}$ sec and $R = 0.646 \pm 0.008$ . The errors include both the statistical errors and our estimate of the systematic errors.

References (8)

A. A. Belavin and I. M. Narodetsky, Phys. Letters 26B, 668 (1968)
W. E. Humphrey and R. R. Ross, Phys. Rev. 127, 1305 (1962)
J. A. Anderson et al., in Proceedings of the 1962 Conference on High-Energy Physics at CERN, edited by J. Prentki (CERN, Geneva, Switzerland, 1962), p. 832
D. Berley, Brookhaven National Laboratory AGS Department Internal Report No. 6/11/65 (unpublished)
C. Baltay et al., Phys. Rev. Letters 22, 615 (1969)
B. Sechi-Zorn et al., Phys. Rev. 175, 1735 (1968)
G. Alexander et al., Phys. Rev. 173, 1452 (1968)
Particle Data Group, Rev. Mod. Phys. 42, 87 (1970)

[c1] A. A. Belavin and I. M. Narodetsky, Phys. Letters 26B, 668 (1968)

[c2] W. E. Humphrey and R. R. Ross, Phys. Rev. 127, 1305 (1962)

[c3] J. A. Anderson et al., in Proceedings of the 1962 Conference on High-Energy Physics at CERN, edited by J. Prentki (CERN, Geneva, Switzerland, 1962), p. 832

[c4] D. Berley, Brookhaven National Laboratory AGS Department Internal Report No. 6/11/65 (unpublished)

[c5] C. Baltay et al., Phys. Rev. Letters 22, 615 (1969)

[c6] B. Sechi-Zorn et al., Phys. Rev. 175, 1735 (1968)

[c7] G. Alexander et al., Phys. Rev. 173, 1452 (1968)

[c8] Particle Data Group, Rev. Mod. Phys. 42, 87 (1970)

Physical Review D

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Precision Measurement of the Lifetime and Decay Branching Ratio of the $Λ^{0}$ Hyperon

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Precision Measurement of the Lifetime and Decay Branching Ratio of the Λ0 Hyperon

Abstract

References (8)

Precision Measurement of the Lifetime and Decay Branching Ratio of the $Λ^{0}$ Hyperon