Speaker
Description
The measurement of the time-dependent CP violation parameters for $B$-meson decays is crucial for tightening the constraints on the unitarity triangle and for the search of new physics beyond the Standard Model. A clean environment for the study of $B$ decay channels is provided by $B$-factories. With a design luminosity of 8 $\cdot$ 10$^{35}$cm$^{-2}$s$^{-1}$, leading ultimately to an integrated luminosity beyond 50 ab$^{-1}$, the new $B$-factory SuperKEKB will exceed the record instantaneous luminosity of its predecessor KEKB by a factor 40.
The new Belle II detector will exploit the expected high statistics data sample thanks to a major upgrade of the tracking system, including a novel pixel vertex detector in its innermost part. Additionally, the detector capabilities will be complemented by substantial improvements in the reconstruction software.
We develop a strategy for CP violation analysis in order to maximally exploit the new data set and to characterize the sensitivity of Belle II for various benchmark $B$ decay channels. Here we focus on the decay channel $B^0 \to \pi^0\pi^0$, which plays an important role in the precise determination of the unitarity angle $\alpha$.
