Flavor physics and CP violation as probes for new physics at the high-luminosity B factory experiment Belle II

by Markus Röhrken (Caltech)

Thursday 6 Oct 2016, 10:00 → 11:00 Europe/Berlin

Main-2-313 (MPI Meeting rooms)

The B Factory experiments BaBar and Belle established CP violation in the B meson system and enabled to put tight experimental constraints on the quark-flavor sector of the Standard Model. Most importantly, the excellent confirmation of the theory predictions by BaBar and Belle led to the Nobel Prize in physics for Makoto Kobayashi and Toshihide Maskawa in 2008. Continuing on these efforts, the new high-luminosity accelerator SuperKEKB and the next-generation B factory experiment Belle II are currently in intensive preparation and nearing completion at KEK in Japan. SuperKEKB is designed to operate at an instantaneous luminosity of 8x10^35/cm^2/s, which is a factor 40 higher than the world record achieved by its predecessor KEKB. The upgraded Belle II detector will collect data samples about two orders of magnitudes larger than those of the BaBar and Belle experiments. Belle II will enable to perform studies of heavy flavor decays governed by quantum-loop effects at unprecedented precision. In this talk, the experimental prospects of Belle II for CP violating flavor observables sensitive to new physics effects will be discussed. We also present recent results from a new analysis campaign, which for the first time combines the large final data samples collected by the BaBar and Belle experiments in a single physics analysis and enables to perform Belle II-like measurements already at present day.