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A search for rare kaon decays at Brookhaven

Conference · · AIP Conference Proceedings (American Institute of Physics); (United States)
OSTI ID:6430680
 [1]
  1. University of California, Los Angeles ( )

We have performed a search for the rare kaon decay [ital K][sub [ital L]] [r arrow] [mu][ital e] at Brookhaven. Finding no events, we set a limit of [ital B]([ital K][sub [ital L]] [r arrow] [mu][ital e])[lt]8.4[times]10[sup [minus]11] (90% confidence level) with a 5% systematic uncertainty. This is a significant improvement over previous results. In addition, we measured the branching ratio of [ital K][sub [ital L]] [r arrow] [mu][mu]; after finding 284 of these events, we calculate a branching ratio of [ital B]([ital K][sub [ital L]] [r arrow] [mu][mu])=(7.6[plus minus]0.5[plus minus]0.4)[times]10[sup [minus]9].

OSTI ID:
6430680
Report Number(s):
CONF-910228--
Journal Information:
AIP Conference Proceedings (American Institute of Physics); (United States), Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Vol. 261:1; ISSN 0094-243X; ISSN APCPCS
Country of Publication:
United States
Language:
English