The Belle-II Pixel Vertex Detector at the SuperKEKB Flavor Factory

Abstract

An upgraded asymmetric ee flavor factory, SuperKEKB, is planned at KEK. It will deliver a luminosity of 8 × 10cms, allowing precision measurements in the flavor sector which can probe new physics well beyond the scales accessible to direct observation. The increased luminosity also requires upgrades of the Belle detector. Of critical importance here is a new silicon pixel vertex tracker, which will significantly improve the decay vertex resolution. This new detector will consist of two detector layers close to the interaction point, using DEPFET pixel sensors with 50 μm thick silicon in the active area.