Measurement of the Branching Ratio of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>CP</mi></math></span>-Violating Decay Mode <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>L</mi></mrow></msub></mrow></mrow><mrow><mn>0</mn></mrow></msup></mrow><mo>→</mo><mn>2</mn><mrow><msup><mrow><mi>π</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span>

I. A. Budagov; D. C. Cundy; G. Myatt; F. A. Nezrick; G. H. Trilling; W. Venus; H. Yoshiki; B. Aubert; P. Heusse; I. Le Dong; J. P. Lowys; D. Morellet; E. Nagy; C. Pascaud; L. Behr; P. Beillière; G. Boutang; M. Schiff

doi:10.1103/PhysRevD.2.815

Measurement of the Branching Ratio of the $CP$ -Violating Decay Mode ${K_{L}}^{0} \to 2 π^{0}$

I. A. Budagov, D. C. Cundy, G. Myatt, F. A. Nezrick, G. H. Trilling, W. Venus, H. Yoshiki, B. Aubert, P. Heusse, I. Le Dong, J. P. Lowys, D. Morellet, E. Nagy, C. Pascaud, L. Behr, P. Beillière, G. Boutang, and M. Schiff

Phys. Rev. D 2, 815 – Published 1 September 1970

Abstract

The branching ratio $Γ \frac{({K_{L}}^{0} \to 2 π^{0})}{Γ ({K_{L}}^{0} \to 3 π^{0})}$ has been measured directly, using a heavy-liquid bubble chamber, and found to be $(3.2 \pm 1.5) \times 10^{- 3}$ , from which $| η_{00} | = (1.9 \pm 0.5) \times 10^{- 3}$ .

Received 30 March 1970

DOI:https://doi.org/10.1103/PhysRevD.2.815

Authors & Affiliations

I. A. Budagov^*, D. C. Cundy, G. Myatt, F. A. Nezrick^†, G. H. Trilling^‡, W. Venus, and H. Yoshiki

CERN, Geneva, Switzerland

B. Aubert, P. Heusse, I. Le Dong, J. P. Lowys, D. Morellet, E. Nagy^§, and C. Pascaud

Laboratoire de l'Accélérateur Linéaire, Faculté des Sciences, Orsay, France

L. Behr, P. Beillière, G. Boutang, and M. Schiff

Ecole Polytechnique, Paris, France

^*Now at Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, Dubna, USSR.
^†Now at National Accelerator Laboratory, Batavia, Ill.
^‡National Science Foundation Senior Postdoctoral Fellow. Permanent address: Lawrence Radiation Laboratory, University of California, Berkeley, Calif.
^§Present address: Central Research Institute of Physics, Budapest, Hungary.

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Vol. 2, Iss. 5 — 1 September 1970

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Physical Review D

covering particles, fields, gravitation, and cosmology