The Opportunity Offered by the ESSnuSB Project to Exploit the Larger Leptonic CP Violation Signal at the Second Oscillation Maximum and the Requirements of This Project on the ESS Accelerator Complex

E. Wildner; E. Baussan; M. Blennow; M. Bogomilov; A. Burgman; E. Bouquerel; C. Carlile; J. Cederkäll; P. Christiansen; P. Cupial; H. Danared; M. Dracos; T. Ekelöf; M. Eshraqi; R. Hall-Wilton; J.-P. Koutchouk; M. Lindroos; M. Martini; R. Matev; D. McGinnis; R. Miyamoto; T. Ohlsson; H. Öhman; M. Olvegård; R. Ruber; H. Schönauer; J. Y. Tang; R. Tsenov; G. Vankova-Kirilova; N. Vassilopoulos

doi:10.1155/2016/8640493

Advances in High Energy Physics (Jan 2016)

The Opportunity Offered by the ESSnuSB Project to Exploit the Larger Leptonic CP Violation Signal at the Second Oscillation Maximum and the Requirements of This Project on the ESS Accelerator Complex

E. Wildner,
E. Baussan,
M. Blennow,
M. Bogomilov,
A. Burgman,
E. Bouquerel,
C. Carlile,
J. Cederkäll,
P. Christiansen,
P. Cupial,
H. Danared,
M. Dracos,
T. Ekelöf,
M. Eshraqi,
R. Hall-Wilton,
J.-P. Koutchouk,
M. Lindroos,
M. Martini,
R. Matev,
D. McGinnis,
R. Miyamoto,
T. Ohlsson,
H. Öhman,
M. Olvegård,
R. Ruber,
H. Schönauer,
J. Y. Tang,
R. Tsenov,
G. Vankova-Kirilova,
N. Vassilopoulos

Affiliations

E. Wildner: CERN, 1211 Geneva 23, Switzerland
E. Baussan: IPHC, Université de Strasbourg, CNRS/IN2P3, 67037 Strasbourg, France
M. Blennow: Department of Theoretical Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University Center, 106 91 Stockholm, Sweden
M. Bogomilov: Department of Atomic Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
A. Burgman: Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden
E. Bouquerel: IPHC, Université de Strasbourg, CNRS/IN2P3, 67037 Strasbourg, France
C. Carlile: Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden
J. Cederkäll: Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden
P. Christiansen: Department of Physics, Lund University, P.O. Box 118, 221 00 Lund, Sweden
P. Cupial: AGH University of Science and Technology, Aleja Mickiewicza 30, 30-059 Krakow, Poland
H. Danared: European Spallation Source, ESS ERIC, P.O. Box 176, 221 00 Lund, Sweden
M. Dracos: IPHC, Université de Strasbourg, CNRS/IN2P3, 67037 Strasbourg, France
T. Ekelöf: Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden
M. Eshraqi: European Spallation Source, ESS ERIC, P.O. Box 176, 221 00 Lund, Sweden
R. Hall-Wilton: European Spallation Source, ESS ERIC, P.O. Box 176, 221 00 Lund, Sweden
J.-P. Koutchouk: CERN, 1211 Geneva 23, Switzerland
M. Lindroos: European Spallation Source, ESS ERIC, P.O. Box 176, 221 00 Lund, Sweden
M. Martini: CERN, 1211 Geneva 23, Switzerland
R. Matev: Department of Atomic Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
D. McGinnis: European Spallation Source, ESS ERIC, P.O. Box 176, 221 00 Lund, Sweden
R. Miyamoto: European Spallation Source, ESS ERIC, P.O. Box 176, 221 00 Lund, Sweden
T. Ohlsson: Department of Theoretical Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University Center, 106 91 Stockholm, Sweden
H. Öhman: Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden
M. Olvegård: Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden
R. Ruber: Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 75120 Uppsala, Sweden
H. Schönauer: CERN, 1211 Geneva 23, Switzerland
J. Y. Tang: Institute of High Energy Physics, CAS, Beijing 100049, China
R. Tsenov: Department of Atomic Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
G. Vankova-Kirilova: Department of Atomic Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
N. Vassilopoulos: Institute of High Energy Physics, CAS, Beijing 100049, China

DOI: https://doi.org/10.1155/2016/8640493
Journal volume & issue: Vol. 2016

Abstract

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The European Spallation Source (ESS), currently under construction in Lund, Sweden, is a research center that will provide, by 2023, the world’s most powerful neutron source. The average power of the proton linac will be 5 MW. Pulsing this linac at higher frequency will make it possible to raise the average total beam power to 10 MW to produce, in parallel with the spallation neutron production, a very intense neutrino Super Beam of about 0.4 GeV mean neutrino energy. This will allow searching for leptonic CP violation at the second oscillation maximum where the sensitivity is about 3 times higher than at the first. The ESS neutrino Super Beam, ESSnuSB operated with a 2.0 GeV linac proton beam, together with a large underground Water Cherenkov detector located at 540 km from Lund, will make it possible to discover leptonic CP violation at 5σ significance level in 56% (65% for an upgrade to 2.5 GeV beam energy) of the leptonic CP-violating phase range after 10 years of data taking, assuming a 5% systematic error in the neutrino flux and 10% in the neutrino cross section. The paper presents the outstanding physics reach possible for CP violation with ESSnuSB obtainable under these assumptions for the systematic errors. It also describes the upgrade of the ESS accelerator complex required for ESSnuSB.

Published in Advances in High Energy Physics

ISSN: 1687-7357 (Print); 1687-7365 (Online)
Publisher: Wiley
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://onlinelibrary.wiley.com/journal/1682

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