On the Physics Case of a Super Flavour Factory

TL;DR

This paper advocates for a high-luminosity e+e- flavour factory, highlighting its unique potential to perform sensitive measurements of B, D, and tau particles, thereby probing new physics up to very high energy scales.

Contribution

It presents the physics case for a Super Flavour Factory, emphasizing its capability to explore new physics and measure couplings that complement LHC discoveries.

Findings

Enables measurements sensitive to new particles up to 100-1000 TeV.

Can measure flavour- and CP-violating couplings of new particles.

Complements LHC in reconstructing the New Physics Lagrangian.

Abstract

We summarize the physics case of a high-luminosity e+e- flavour factory collecting an integrated luminosity of 50-75 ab^(-1). Many New Physics sensitive measurements involving B and D mesons and tau leptons, unique to a Super Flavour Factory, can be performed with excellent sensitivity to new particles with masses up to ~100 (or even ~1000 TeV). Flavour- and CP-violating couplings of new particles that may be discovered at the LHC can be measured in most scenarios, even in unfavourable cases assuming minimal flavour violation. Together with the LHC, a Super Flavour Factory, following either the SuperKEKB or the SuperB proposal, could be soon starting the project of reconstructing the New Physics Lagrangian.