Search for D^0-\bar{D^0} mixing using semileptonic decays at Belle

Details Search for D^0-\bar{D^0} mixing using semileptonic decays at Belle Search for D^0-\bar{D^0} mixing using semileptonic decays at Belle

2005-07-05

arxiv.org/abs/hep-ex/0507020v2

Phys.Rev.D72:071101,2005

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 3 figures, submitted to PRD-RC; version 2: the result and other numbers are the same; improved description of the mot

Scientific paper

10.1103/PhysRevD.72.071101

A search for mixing in the neutral D meson system has been performed using semileptonic D^0 \to K^(*)- e^+ nu decays. Neutral D mesons from D^*+ \to D^0 pi+ decays are used; the flavor at production is tagged by the charge of the slow pion. The measurement is performed using 253 fb^-1 of data recorded by the Belle detector. From the yield of right-sign and wrong-sign decays arising from non-mixed and mixed events, respectively, we estimate the upper limit of the time-integrated mixing rate to be r_D < 1.0 x 10^-3 at 90 % C.L.

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