ICHEP2018 SEOUL

Measurement of cos2beta = cos2phi_1 in B^0 to D^{(*)0} h^0 with D to K^0_S pi^+ pi^- decays by a time-dependent Dalitz analysis using BaBar and Belle combined data

Jul 6, 2018, 9:20 AM

20m

102 (COEX, Seoul)

Parallel Quark and Lepton Flavor Physics Quark and Lepton Flavor Physics

Speaker

Vitaly Vorobyev (Budker Institute of Nuclear Physics (RU))

Description

We report measurements of sin2beta = sin2phi_1 and cos2beta = cos2phi_1 from a time-dependent Dalitz analysis in B^0 to D^{(*)0} h^0 with D to K^0_S pi^+ pi^- decays using BaBar and Belle combined data sample containing 471 + 772 million B meson pairs collected at the Upsilon(4S) resonance. The measurement gives a confirmation of the CP violation in this B decay mode and solves the two-fold ambiguity of the angle beta=phi_1 that can not solely be fixed by the sin2beta = sin2phi_1 measurements in B^0 to charmonium K^0 decays.

Presentation materials

vorobyev-cos2beta_v1.3.pdf