Super KEKB and Belle II: Status of the KEK Super B Factory
Abstract
The Belle detector at the KEKB electron-positron collider has collected approximately 800 million Upsilon(4S) events in its decade of operation. The KEKB group has proposed Super-KEKB, an upgrade of KEKB to increase the luminosity by two orders of magnitude during a three-year shutdown, with an ultimate goal of 8E35/cm2/s luminosity. To exploit the increased luminosity, an upgrade of the Belle detector has been proposed. A new international collaboration Belle-II, is being formed, with a broader participation of European institutes. Super-KEKB and Belle-II were officially placed on the KEK 5-year Roadmap in early 2008. The paper presents physics motivation, basic methods of the accelerator upgrade, as well as key improvements of the detector. More details are given on the DEPFET pixel detector that will be completely built in Europe.
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