CP Violation and the Future of Flavor Physics

TL;DR

This paper discusses the upgrade of KEKB to SuperKEKB and the Belle detector to Belle-II, aiming to significantly enhance luminosity and physics capabilities for future flavor physics experiments starting in 2013.

Contribution

It details the plans and technical improvements for the SuperKEKB and Belle-II upgrades to advance flavor physics research.

Findings

Achieving nearly two orders of magnitude higher luminosity.

Enhanced detector background tolerance and physics performance.

Preparation for new flavor physics measurements starting in 2013.

Abstract

With the nearing completion of the first-generation experiments at asymmetric $e^+ e^-$ colliders running at the $\Upsilon(4S)$ resonance ("B-Factories") a new era of high luminosity machines is at the horizon. We report here on the plans at KEK in Japan to upgrade the KEKB machine ("SuperKEKB") with the goal of achieving an instantaneous luminosity exceeding $8 \times 10^{35}$ cm$^{-2}$ s$^{-1}$, which is almost two orders of magnitude higher than KEKB. Together with the machine, the Belle detector will be upgraded as well ("Belle-II"), with significant improvements to increase its background tolerance as well as improving its physics performance. The new generation of experiments is scheduled to take first data in the year 2013.