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European Strategy for Accelerator-Based Neutrino Physics
Sergio Bertolucci, Alain Blondel, Anselmo Cervera, Andrea Donini, Marcos Dracos, Dominique Duchesneau1, Fanny Dufour, Rob Edgecock, Ilias Efthymiopoulos, Edda Gschwendtner, Yury Kudenko, Ken Long, Jukka Maalampi, Mauro Mezzetto, Silvia Pascoli, Vittorio Palladino, Ewa Rondio, Andre Rubbia, Carlo Rubbia, Achim Stahl, Luca Stanco, Jenny Thomas, David Wark, Elena Wildner, Marco Zito

Massive neutrinos reveal physics beyond the Standard Model, which could have deep consequences for our understanding of the Universe. Their study should therefore receive the highest level of priority in the European Strategy. The discovery and study of leptonic CP violation and precision studies of the transitions between neutrino flavours require high intensity, high precision, long baseline accelerator neutrino experiments. The community of European neutrino physicists involved in oscillation experiments is strong enough to support a major neutrino long baseline project in Europe, and has an ambitious, competitive and coherent vision to propose. Following the 2006 European Strategy for Particle Physics (ESPP) recommendations, two complementary design studies have been carried out: LAGUNA/LBNO, focused on deep underground detector sites, and EUROnu, focused on high intensity neutrino facilities. LAGUNA LBNO recommends, as first step, a conventional neutrino beam CN2PY from a CERN SPS North Area Neutrino Facility (NANF) aimed at the Pyhasalmi mine in Finland. A sterile neutrino search experiment which could also be situated in the CERN north area has been proposed (ICARUS-NESSIE) using a two detector set-up, allowing a definitive answer to the 20 year old question open by the LSND experiment. EUROnu concluded that a 10 GeV Neutrino Factory, aimed at a magnetized neutrino detector situated, also, at a baseline of around 2200 km (+-30%), would constitute the ultimate neutrino facility; it recommends that the next 5 years be devoted to the R&D, preparatory experiments and implementation study, in view of a proposal before the next ESPP update. The coherence and quality of this program calls for the continuation of neutrino beams at CERN after the CNGS, and for a high priority support from CERN and the member states to the experiments and R&D program.
1:  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
Physics/High Energy Physics - Experiment

Physics/Physics/Accelerator Physics

Physics/Physics/Instrumentation and Detectors
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