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