From the LHC to Future Colliders

TL;DR

This paper reviews the potential of future colliders to explore new physics discoveries following the LHC's initial findings, covering various scenarios and collider options to guide scientific priorities.

Contribution

It provides a comprehensive assessment of future collider capabilities in light of possible LHC discoveries across multiple physics scenarios.

Findings

Future colliders can probe Higgs properties and beyond Standard Model physics.

Different scenarios at the LHC influence the design and focus of future colliders.

The report offers tools for prioritizing future particle physics research.

Abstract

Discoveries at the LHC will soon set the physics agenda for future colliders. This report of a CERN Theory Institute includes the summaries of Working Groups that reviewed the physics goals and prospects of LHC running with 10 to 300/fb of integrated luminosity, of the proposed sLHC luminosity upgrade, of the ILC, of CLIC, of the LHeC and of a muon collider. The four Working Groups considered possible scenarios for the first 10/fb of data at the LHC in which (i) a state with properties that are compatible with a Higgs boson is discovered, (ii) no such state is discovered either because the Higgs properties are such that it is difficult to detect or because no Higgs boson exists, (iii) a missing-energy signal beyond the Standard Model is discovered as in some supersymmetric models, and (iv) some other exotic signature of new physics is discovered. In the contexts of these scenarios, the Working Groups reviewed the capabilities of the future colliders to study in more detail whatever new physics may be discovered by the LHC. Their reports provide the particle physics community with some tools for reviewing the scientific priorities for future colliders after the LHC produces its first harvest of new physics from multi-TeV collisions.