- Adachi, I;
- Adye, T;
- Ahmed, H;
- Ahn, JK;
- Aihara, H;
- Akar, S;
- Alam, MS;
- Albert, J;
- Anulli, F;
- Arnaud, N;
- Asner, DM;
- Aston, D;
- Atmacan, H;
- Aushev, T;
- Ayad, R;
- Badhrees, I;
- Bakich, AM;
- Banerjee, S;
- Bansal, V;
- Barlow, RJ;
- Batignani, G;
- Beaulieu, A;
- Behera, P;
- Bellis, M;
- Ben-Haim, E;
- Bernard, D;
- Bernlochner, FU;
- Bettarini, S;
- Bettoni, D;
- Bevan, AJ;
- Bhardwaj, V;
- Bhuyan, B;
- Bianchi, F;
- Biasini, M;
- Biswal, J;
- Blinov, VE;
- Bomben, M;
- Bondar, A;
- Bonneaud, GR;
- Bozek, A;
- Bozzi, C;
- Bračko, M;
- Browder, TE;
- Brown, DN;
- Brown, DN;
- Bünger, C;
- Burchat, PR;
- Buzykaev, AR;
- Calabrese, R;
- Calcaterra, A;
- Calderini, G;
- Di Carlo, S;
- Carpinelli, M;
- Cartaro, C;
- Casarosa, G;
- Cenci, R;
- Chao, DS;
- Chauveau, J;
- Cheaib, R;
- Chen, A;
- Chen, C;
- Cheng, CH;
- Cheon, BG;
- Chilikin, K;
- Cho, K;
- Choi, Y;
- Choudhury, S;
- Chrzaszcz, M;
- Cibinetto, G;
- Cinabro, D;
- Cochran, J;
- Coleman, JP;
- Convery, MR;
- Cowan, G;
- Cowan, R;
- Cremaldi, L;
- Cunliffe, S;
- Dash, N;
- Davier, M;
- Davis, CL;
- De Mori, F;
- De Nardo, G;
- Denig, AG;
- De Sangro, R;
- Dey, B;
- Di Lodovico, F;
- Dittrich, S;
- DoleŽal, Z;
- Dorfan, J;
- Drásal, Z;
- Druzhinin, VP;
- Dunwoodie, W;
- Ebert, M;
- Echenard, B;
- Eidelman, S;
- Eigen, G;
- Eisner, AM;
- Emery, S;
- Epifanov, D;
- Ernst, JA
- et al.
We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB pairs collected at the (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(∗)h0 decays. The measurement assumes no direct CP violation in B0→D(∗)h0 decays.