EPS-HEP 2017

Exclusion of multifold solutions of the CKM Unitarity Triangle by a time-dependent Dalitz plot analysis of B0 --> D(*) h0 with D --> Ks pi pi decays combining BaBar and Belle data

Not scheduled

15m

Salone Adriatico (Palazzo del Casinò)

Board: FL-9

Poster Presentation Flavour Physics and Fundamental Symmetries Poster session

Speaker

Gerald Eigen (University of Bergen (NO))

Description

We present results of a new analysis campaign, which combines the final data samples collected by the B factory experiments BaBar and Belle in single physics analyses to achieve a unique sensitivity in time-dependent CP violation measurements. The data samples contain $(471\pm 3)\times {10}^{6}B\overline{B}$ pairs recorded by the BaBar detector and $(772\pm 11)\times {10}^{6}B\overline{B}$ pairs recorded by the Belle detector in $e^{+}{e}^{-}$ collisions at the center-of-mass energies corresponding to the mass of the $\mathrm{{\rm Y}}\left(4S\right)$ resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We present a measurement of $\sin (2\beta )$ and $\cos (2\beta )$ by a time-dependent Dalitz plot analysis of $B^0\to D^{(\ast )}{h}^0$ with $D\to K_S^0{\pi }^{+}{\pi }^{-}$ decays. A first evidence for $\cos (2\beta )>0$, the exclusion of trigonometric multifold solutions of the Unitarity Triangle and an observation of CP violation are reported.