Glion Colloquium / June An Outlook from Europe An Outlook from Europe Accelerating Science and Innovation R.-D. Heuer, CERN EPS-HEP, Grenoble, 27 July 2011

“Discovery” of Standard Model At the energy frontier through synergy of hadron - hadron colliders (e.g. Tevatron) lepton - hadron colliders (HERA) lepton - lepton colliders (e.g. LEP, SLC) ‘Yesterday’

possible due to precision measurements known higher order electroweak corrections LEP Test of the SM at the Level of Quantum Fluctuations indirect determination of the top mass prediction of the range for theHiggs mass

origin of mass/matter or origin of electroweak symmetry breaking unification of forces fundamental symmetry of forces and matter where is antimatter unification of quantum physics and general relativity number of space/time dimensions what is dark matter what is dark energy Key Questions of Particle Physics

Solutions? Higgs Salam Weinberg Glashow Extra Dimensions New dimensions introduced m Gravity ≈ m elw  Hierarchy problem solved New particles at ≈ TeV scale Extra Dimensions New dimensions introduced m Gravity ≈ m elw  Hierarchy problem solved New particles at ≈ TeV scale Supersymmetry New particles at ≈ TeV scale, light Higgs Unification of forces Higgs mass stabilized No new interactions Technicolor New (strong) interactions produce EWSB Extensions of the SM gauge group : Little Higgs / GUTs / … Rubbia van der Meer Veltman ‘t Hooft GrossWilczek Politzer Cronin Fitch Reines Perl Friedman Kendall Taylor LedermanSchwartz Steinberger Richter Ting Gell-Mann Alvarez Feynman Schwinger Hofstadter Yang Lee Selected NP since 1957 Except P. Higgs For all proposed solutions: new particles should appear at TeV scale or below  territory of the LHC

Exciting Times At the energy frontier, the LHC brings us into unexplored territory: Excellent progress Accelerator – Experiments – Grid ‘Today’

7 Key message (I) LHC and the Standard Model Finding the Higgs: Discovery Excluding the Higgs: Discovery Reminder: LHC needs to clarify mechanism of electroweak symmetry breaking

Unique world-class fixed-target programme Already planned and approved experiments at the AD, n-TOF, Isolde, PS and SPS complexes including CNGS New projects –HIE-ISOLDE –ELENA –COMPASS2 –Neutrino physics projects being investigated 8 CERN today….besides LHC

Key message (II) ‘Tomorrow’ There is a 20 years programme at the energy frontier with the LHC: 7 TeV 14 TeV design luminosity 14 TeV high luminosity (HL-LHC)

LS3 Installation of the HL-LHC hardware (accelerator and detector) Not yet approved! July 23, 2011S. Myers ECFA-EPS, Grenoble update of European HEP Roadmap Plan to continue until around 2030

? ‘Beyond Tomorrow’ Energy Frontier Energy Frontier beyond 14 TeV LHC beyond 14 TeV LHC Energy Frontier Energy Frontier beyond 14 TeV LHC beyond 14 TeV LHC

CLIC conceptual design report by 2012 Participation in all LC activities LHeC conceptual design report 2011 R&D for high-field magnets (towards HE- LHC) Generic R&D for a high-power SPL 12 CERN today….into the future

July 23, 2011 S. Myers ECFA-EPS, Grenoble 13

LHeC options: RR and LR RR LHeC: new ring in LHC tunnel, with bypasses around experiments RR LHeC e-/e+ injector 10 GeV, 10 min. filling time LR LHeC: recirculating linac with energy recovery, or straight linac Frank Zimmermann, UPHUK4 Bodrum 2010 July 23, 2011 S. Myers ECFA-EPS, Grenoble 14

HE-LHC – LHC modifications 2-GeV Booster Linac4 SPS+, 1.3 TeV, HE-LHC July 23, 2011 S. Myers ECFA-EPS, Grenoble 15

16 Key message (III) All these projects need continuing accelerator and detector R&D; all these projects need continuing attention concerning a convincing physics case; so that the right decision can be made when the time comes to identify the next energy frontier accelerator (collider). Today, we need to keep our choices open.

Rich variety of projects under study at the energy frontier and the intensity frontier Global – Regional – National Projects  Need to present and discuss all these projects in an international context before making choices  Need to present physics case(s) always taking into account latest results at existing facilities 17 Choices ?

Update of the European Strategy for Particle Physics in Several Meetings with international participation  bottom-up process: your input needed - increase coordination with astroparticle and nuclear community ICFA Seminar 3-6 October 2011 at CERN use as 1 st step to harmonize Particle Physics Strategy globally 18 Choices ? Choices !

Road beyond Standard Model At the energy frontier through synergy of hadron - hadron colliders (LHC, HL/HE-LHC?) lepton - hadron colliders (LHeC ??) lepton - lepton colliders (LC (ILC or CLIC) ?) Next decades LHC results will guide the way at the energy frontier

Results from LHC will guide the way Expect period for decision enabling on next steps earliest 2012 (at least) concerning energy frontier (similar situation concerning neutrino sector Θ 13 ) We are NOW in a new exciting era of accelerator planning-design-construction-running and need intensified efforts on R&D and technical design work to enable these decisions global collaboration and stability on long time scales (don‘t forget: first workshop on LHC was 1984)  more coordination and more collaboration required 20

Opening the door… Membership for Non-European countries New Associate Membership defined Romania in accession to membership Negotiations started with Cyprus, Israel, Serbia, Slovenia, and Turkey concerning membership Several countries expressed interest in associate membership CERN participation in global projects independent of location

We need to define the most appropriate organizational form for global projects NOW and need to be open and inventive (scientists, funding agencies, politicians...) Mandatory to have accelerator laboratories in all regions as partners in accelerator development / construction / commissiong / exploitation Planning and execution of HEP projects today need global partnership for global, regional and national projects in other words: for the whole program Use the exciting times ahead to establish such a partnership 22

Past decades saw precision studies of 5 % of our Universe  Discovery of the Standard Model The LHC is running well Experiments are delivering exciting results Other intriguing results, e.g. in neutrino physics We are just at the beginning of exploring 95 % of the Universe

Past decades saw precision studies of 5 % of our Universe  Discovery of the Standard Model The LHC is running well Experiments are delivering exciting results Other intriguing results, e.g. in neutrino physics We are just at the beginning of exploring 95 % of the Universe exciting prospects