Measurement of sin2phi1 at Belle
Abstract
With 6.2 fb-1 of data collected on the Upsilon(4S), Belle reports its first measurement of sin 2φ1 = 0.45+0.43-0.44(stat)+0.07-0.09(sys). The result was obtained by fitting the proper time distribution of flavor tagged and fully reconstructed neutral B mesons decays to five different charmonia plus a Kshort or Klong channels. In this paper the analysis and results will be described briefly.
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