Search for KL0

V. Papadimitriou, L. K. Gibbons, J. R. Patterson, Y. W. Wah, B. Winstein, R. Winston, M. Woods, H. Yamamoto, E. C. Swallow, G. J. Bock, R. Coleman, Y. B. Hsiung, K. Stanfield, R. Stefanski, T. Yamanaka, G. D. Gollin, M. Karlsson, J. K. Okamitsu, P. Debu, B. PeyaudR. Turlay, B. Vallage

Research output: Contribution to journalArticlepeer-review


A search for the rare decay mode KL was performed using a data set from Fermilab experiment E-731. The decay is of interest in the context of chiral perturbation theory and for its contribution to the decay KL0e+e-. The result is B(KL)<2.7 ×10-6 (90% confidence level) which is nearly a two-order-of magnitude improvement over the previous best limit.

Original languageEnglish (US)
Pages (from-to)28-30
Number of pages3
JournalPhysical review letters
Issue number1
StatePublished - 1989
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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