New Physics at a Super Flavor Factory

TL;DR

A Super Flavor Factory (SFF) with high luminosity can significantly advance the search for New Physics through precise measurements of B, charm, and tau decays, providing complementary insights to collider experiments.

Contribution

This paper reviews the capabilities of a Super Flavor Factory for probing New Physics with unprecedented precision in flavor observables and CP asymmetries.

Findings

Enables precise determination of unitarity triangle parameters.

Provides sensitive tests of New Physics scenarios with a few percent accuracy.

Allows exploration of theoretically clean processes like B -> X_s nu nubar.

Abstract

The potential of a Super Flavor Factory (SFF) for searches of New Physics is reviewed. While very high luminosity B physics is assumed to be at the core of the program, its scope for extensive charm and tau studies are also emphasized. The possibility to run at the Upsilon(5S) is also very briefly discussed; in principle, this could provide very clean measurements of B_s decays. The strength and reach of a SFF is most notably due to the possibility of examining an impressive array of very clean observables. The angles and the sides of the unitarity triangle can be determined with unprecedented accuracy. These serve as a reference for New Physics (NP) sensitive decays such as B^+ ->tau^+ nu and penguin dominated hadronic decay modes, providing tests of generic NP scenarios with an accuracy of a few percent. Besides, very precise studies of direct and time dependent CP asymmetries in radiative B decays and forward-backward asymmetry studies in B-> X_s l^+ l^- and numerous null tests using B, charm and tau decays are also likely to provide powerful insights into NP. The dramatic increase in luminosity at a SFF will also open up entirely new avenues for probing NP observables, e.g. by allowing sensitive studies using theoretically clean processes such as B -> X_s nu nubar. The SFF is envisioned to be a crucial tool for essential studies of flavor in the LHC era, and will extend the reach of the LHC in many important ways.