The Compact Linear e$^+$e$^-$ Collider (CLIC): Physics Potential

TL;DR

The paper discusses the physics potential of the proposed CLIC e$^+$e$^-$ collider, highlighting its ability to perform high-precision measurements and explore new physics beyond the Standard Model across a wide energy range.

Contribution

It provides a comprehensive summary of CLIC's capabilities, including detailed simulation studies demonstrating its potential for precision measurements and new physics searches.

Findings

Access to large event samples for SM processes

High-precision measurements of Higgs and top quark properties

Enhanced sensitivity to physics beyond the Standard Model

Abstract

The Compact Linear Collider, CLIC, is a proposed e$^+$e$^-$ collider at the TeV scale whose physics potential ranges from high-precision measurements to extensive direct sensitivity to physics beyond the Standard Model. This document summarises the physics potential of CLIC, obtained in detailed studies, many based on full simulation of the CLIC detector. CLIC covers one order of magnitude of centre-of-mass energies from 350 GeV to 3 TeV, giving access to large event samples for a variety of SM processes, many of them for the first time in e$^+$e$^-$ collisions or for the first time at all. The high collision energy combined with the large luminosity and clean environment of the e$^+$e$^-$ collisions enables the measurement of the properties of Standard Model particles, such as the Higgs boson and the top quark, with unparalleled precision. CLIC might also discover indirect effects of very heavy new physics by probing the parameters of the Standard Model Effective Field Theory with an unprecedented level of precision. The direct and indirect reach of CLIC to physics beyond the Standard Model significantly exceeds that of the HL-LHC. This includes new particles detected in challenging non-standard signatures. With this physics programme, CLIC will decisively advance our knowledge relating to the open questions of particle physics.