Eur. Phys. J. C (2010) 66: 525-583
https://doi.org/10.1140/epjc/s10052-010-1244-3

Review

From the LHC to future colliders

CERN Theory Institute summary report

¹ Department of Physics, CERN, Geneva, Switzerland
² University of Antwerp, Wilrijk, Belgium
³ CEA, Saclay, France
⁴ Instituto de Física de Cantabria (CSIC-UC), Santander, Spain
⁵ Physikalisches Institut, Albert-Ludwigs-Universität, Freiburg, Germany
⁶ IPPP, University of Durham, Durham, UK
⁷ Universite de Montréal, Montréal, Canada
⁸ TRIUMF, Vancouver, Canada
⁹ Physics Department, Brookhaven National Laboratory, Upton New York, USA
¹⁰ Department of Physics, University of Wisconsin, Madison, USA
¹¹ SLAC National Accelerator Laboratory, Menlo Park, USA
¹² UCL, London, UK
¹³ INFN, Sezione di Torino, Torino, Italy
¹⁴ Department of Physics, ETH Honggerberg, Zurich, Switzerland
¹⁵ INFN, Sezione di Pavia, Pavia, Italy
¹⁶ DESY, Zeuthen, Germany
¹⁷ DESY, Hamburg, Germany
¹⁸ Fermi National Accelerator Laboratory, Batavia, USA
¹⁹ Paul Scherrer Institut, Villigen, Switzerland
²⁰ Department of Physics, National Taiwan University, Taipei, Taiwan
²¹ Department of Physics, University of Florence and INFN, Sezione di Firenze, Italy
²² Physikalisches Institut, Universität Bonn, Bonn, Germany
²³ Bethe Center for Theoretical Physics and Physikalisches Institut, Bonn University, Bonn, Germany
²⁴ CP³—Origins, University of Southern Denmark, Odense, Denmark
²⁵ Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, UK
²⁶ CP3, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
²⁷ Centre for High Energy Physics, Indian Institute of Science, Bangalore, India
²⁸ Università and INFN Milano-Bicocca, Milano, Italy
²⁹ Department of Physics, UC Davis, USA
³⁰ Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Munich, Germany
³¹ INFN, Laboratori Nazionali di Frascati, Frascati, Italy
³² Physics Department, University of Warsaw, Warsaw, Poland
³³ University of Florida, Gainesville, USA
³⁴ Laboratoire de l’Accelerateur Lineaire, Université Paris-Sud 11, Orsay, France
³⁵ LPSC, UJF Grenoble 1, CNRS/IN2P3, Grenoble, France
³⁶ Department of Physics, Sloane Laboratory, Yale University, New Haven, USA
³⁷ Fysikum, Stockholms Universitet, Stockholm, Sweden
³⁸ INFN, Sezione di Roma, and Università “La Sapienza”, Rome, Italy
³⁹ University of California San Diego, San Diego, USA
⁴⁰ Institute for Theoretical Physics, Heidelberg University, Heidelberg, Germany
⁴¹ Physics Department, Florida State University, Tallahassee, USA
⁴² Institute of Physics, Jagellonian University, Krakow, Poland
⁴³ Institute of Nuclear Physics IFJ-PAN, Krakow, Poland
⁴⁴ McGill University, Montréal, Canada
⁴⁵ Physics Division, TOBB University of Economics and Technology, Ankara, Turkey
⁴⁶ Institut für Physik, Humboldt-Universität zu Berlin, Berlin, Germany
⁴⁷ Cavendish Laboratory, J.J. Thomson Avenue, Cambridge, UK
⁴⁸ Particle Physics, University of Oxford, Keble Road, Oxford, UK

^* e-mail: christophe.grojean@cern.ch

Received: 2 October 2009
Revised: 17 December 2009
Published online: 2 March 2010

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⁻¹ 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⁻¹ 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.