Particle Identification at FCC-ee

TL;DR

Implementing particle identification at FCC-ee enhances physics analyses across multiple sectors, requiring advanced detector solutions like RICH counters and time-of-flight systems, with careful integration into the overall detector design.

Contribution

This paper surveys the physics requirements for particle identification at FCC-ee and discusses potential detector technologies and their integration into the experimental setup.

Findings

PID is crucial for quark flavour, tau, top, and Higgs physics.

Classical RICH, time-of-flight, and dE/dx methods are considered as solutions.

Including PID impacts overall detector design considerations.

Abstract

Equipping an experiment at FCC-ee with particle identification (PID) capabilities, in particular the ability to distinguish between hadron species, would bring great benefits to the physics programme. Good PID is essential for precise studies in quark flavour physics, and is also a great asset for many measurements in tau, top and Higgs physics. The requirements placed by flavour physics and these other applications are surveyed, with an emphasis on the momentum range over which PID is necessary. Possible solutions are discussed, including classical RICH counters, time-of-flight systems, and d$E$/d$x$ and cluster counting. Attention is paid to the impact on the global detector design that including PID capabilities would imply.