Search for Leptonic CP Violation with the ESSnuSBplus Project

  • Tamer Tolba Institute for Experimental Physics, Hamburg University, 22761 Hamburg, Germany https://orcid.org/0000-0002-5119-3952
  • Jorge Aguilar Consorcio ESS-bilbao, Parque Cient ıfico y Tecnol ogico de Bizkaia, Laida Bidea, Edificio 207-B, 48160 Derio, Bizkaia, Spain
  • Ye Zou Department of Physics and Astronomy, FREIA Division, Uppsala University, P.O. Box 516, 751 20 Uppsala, Sweden
DOI: https://doi.org/10.31526/lhep.2024.517
Keywords: CP-violation, long-baseline, neutrino oscillations, ESS

Abstract

ESSνSB is a design study for a next-generation long-baseline neutrino experiment that aims at the precise
measurement of the CP-violating phase, δCP, in the leptonic sector at the second oscillation maximum. The
conceptual design report published from the first phase of the project showed that after 10 years of data
taking, more than 70% of the possible δCP range will be covered with 5σ C.L. to reject the no-CP-violation
hypothesis. The expected value of δCP precision is smaller than 8◦ for all δCP values. The next phase of the
project, the ESSνSB+, aims at using the intense muon flux produced together with neutrinos to measure
the neutrino-nucleus cross-section, the dominant term of the systematic uncertainty, in the energy range
of 0.2–0.6 GeV, using a Low Energy neutrinos from STORed Muons (LEnuSTORM) and a Low Energy
Monitored Neutrino Beam (LEMNB) facilities.

Published
2024-03-25
Issue
Volume 2024
Section
Beyond Standard Model: From Theory to Experiment (BSM- 2023)

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