Measurement of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Δ</mi><mi>S</mi><mo>=</mo><mo>−</mo><mi>Δ</mi><mi>Q</mi></math></span> Amplitude from <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mrow><msub><mrow><mi>K</mi></mrow><mrow><mi>e</mi><mn>3</mn><mn></mn></mrow></msub></mrow></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span> Decay

F. J. Sciulli; J. D. Gallivan; D. M. Binnie; R. Gomez; M. L. Mallary; C. W. Peck; B. A. Sherwood; A. V. Tollestrup; J. D. van Putten

doi:10.1103/PhysRevLett.25.1214

Measurement of the $Δ S = - Δ Q$ Amplitude from ${K_{e 3}}^{0}$ Decay

F. J. Sciulli, J. D. Gallivan, D. M. Binnie, R. Gomez, M. L. Mallary, C. W. Peck, B. A. Sherwood, A. V. Tollestrup, and J. D. van Putten

Phys. Rev. Lett. 25, 1214 – Published 26 October 1970

Abstract

We have measured the time distribution of the $π^{+} e^{-} ν$ and $π^{-} e^{+} ν$ modes from initial $K^{0}' s$ in a spark-chamber experiment performed at the Bevatron. From 1079 events between 0.2 and $7 {K_{S}}^{0}$ lifetime, we find $Re X = - 0.069 \pm 0.036$ , $Im X = + {0.108}_{- 0.074}^{+ 0.092}$ . This result is consistent with $X = 0$ (relative probability = 0.25), but more than 4 standard deviations from the existing world average, +0.14 - $0.13 i$ .

Received 19 June 1970

DOI:https://doi.org/10.1103/PhysRevLett.25.1214

Authors & Affiliations

F. J. Sciulli, J. D. Gallivan^*, D. M. Binnie^†, R. Gomez, M. L. Mallary, C. W. Peck, B. A. Sherwood^‡, A. V. Tollestrup, and J. D. van Putten^§

California Institute of Technology, Pasadena, California 91109

^*Work supported in part by National University of Ireland Traveling Studentship.
^†On leave from Imperial College, London, England.
^‡Present address: Department of Physics, University of Illinois, Urbana, Ill.
^§Present address: Department of Physics, Hope College, Holland, Mich.