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We present a new measurement of the unitarity triangle angle φ3 using a Dalitz plot analysis of the KThe method exploits the interference between D 0 and D 0 to extract the angle φ3, strong phase δ and the ratio r of suppressed and allowed amplitudes. We apply this method to a 605 fb −1 data sample collected by the Belle experiment. The analysis uses three decays: B ± → DK ± , and B ± → D * K ± with D * → Dπ 0 and D * → Dγ, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain φ3 = 78.4• +10.8 • −11.6 • ± 3.6• (syst) ± 8.9• (model).CP conservation in this process is ruled out at the confidence level (1 − CL) = 5 × 10 −4 , or 3.5 standard deviations.

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Abstrocf-Ambiguities associated with the singularity of the electric dyadic Green's function are clarified. The numerical advantages of finite and infinitesimal principal volumes are dependent on the particular problem being treated.It is shown that apparent discrepancies are nonexistent and that either the method of potential or the theory of distribution can be used in this problem and a unified and consistent view can be formed.