2017 Meeting of the APS Division of Particles and Fields (DPF 2017)

Exclusion of multifold solutions of the CKM Unitarity Triangle by a time-dependent Dalitz plot analysis of B0->D(*) h0 with D->K_S0 pi+ pi- decays combining BaBar and Belle data

3 Aug 2017, 11:39

18m

Curia II (Fermi National Accelerator Laboratory)

Presentation Quark and Lepton Flavor Quark and Lepton Flavor

Speaker

Prof. Gerald Eigen (Caltech)

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 +- 3) x 10^6 BB pairs recorded by the BaBar detector and (772 +- 11) x 10^6 BB pairs recorded by the Belle detector in e+e- collisions at the center-of-mass energies corresponding to the mass of the Y(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We present a measurement of sin(2beta) and cos(2beta) by a time-dependent Dalitz plot analysis of B0->D(*) h0 with D->K_S0 pi+ pi- decays. A first evidence for cos(2beta)>0, the exclusion of trigonometric multifold solutions of the Unitarity Triangle and an observation of CP violation are reported.

Presentation materials

Slides

GE-DPF17.pdf