New limit onKL→π0e+e−
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields1990Vol. 41(11), pp. 3546–3547
A. Barker, R. A. Briere, L. Gibbons, G. Makoff, V. Papadimitriou, J. R. Patterson, S. Somalwar, Y. W. Wah, B. Winstein, R. Winston, M. Woods, H. Yamamoto, E. C. Swallow, G. J. Bock, R. Coleman, J. Enagonio, Y. Hsiung, R. Tschirhart, K. Stanfield, R. Stefanski, Takeharu Yamanaka, G. D. Gollin, Magnus Karlsson, J. K. Okamitsu, P. Debu, B. Peyaud, R. Turlay, B. Vallage
Abstract
Based upon the analysis of the complete data set of Fermilab experiment E-731, we report a new limit on the branching ratio of ${K}_{L}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{e}^{+}{e}^{\ensuremath{-}}$ which is 7.5\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}9}$ (90% confidence).
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