In this Letter, we describe a search for lepton flavor violation (LFV) in the bottomonium system. We search for leptonic decays Upsilon(nS)-->mutau (n=1, 2, and 3) using the data collected with the ...CLEO III detector. We identify the tau lepton using its leptonic decay nu_{tau}nuover _{e}e and utilize multidimensional likelihood fitting with probability density function shapes measured from independent data samples. We report our estimates of 95% C.L. upper limits on LFV branching fractions of Upsilon mesons. We interpret our results in terms of the exclusion plot for the energy scale of a hypothetical new interaction versus its effective LFV coupling in the framework of effective field theory.
Precision Determination of the D 0 Mass Cawlfield, C.; Eisenstein, B. I.; Kim, D. ...
Physical review letters,
03/2007, Letnik:
98, Številka:
9
Journal Article
Observation of D + → η e + ν e Mitchell, R. E.; Shepherd, M. R.; Besson, D. ...
Physical review letters,
02/2009, Letnik:
102, Številka:
8
Journal Article
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