Can atmospheric neutrino experiments provide the first hint of leptonic CP violation?

Abstract

The measurement of a non-zero value of the 1-3 mixing angle has paved the way for the determination of leptonic CP violation. However the current generation long-baseline experiments T2K and NOvA have limited sensitivity to delta_{CP}. In this paper we show for the first time, the significance of that atmospheric neutrino experiments in providing the first hint of CP violation in conjunction with T2K and NOvA. In particular, we find that adding atmospheric neutrino data from the ICAL detector at the India-based Neutrino Observatory (INO) to T2K and NOvA results in a two-fold increase in the range of delta_{CP} values for which a 2 sigma hint of CP violation can be obtained. In fact in the parameter region unfavorable for the latter experiments, the first signature of CP violation may well come from the inclusion of atmospheric neutrino data.

5 pages, 4 figures. Version accepted for publication in Phys. Rev. D (Rapid Communication)

References in corpus (9)

• Observation of electron-antineutrino disappearance at Daya Bay
• New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
• Global status of neutrino oscillation parameters after Neutrino-2012
• Global fit to three neutrino mixing: critical look at present precision
• Physics potential of the CERN-MEMPHYS neutrino oscillation project
• Resolving parameter degeneracies in long-baseline experiments by atmospheric neutrino data
• Mass Hierarchy Determination via future Atmospheric Neutrino Detectors
• Potential of optimized NOvA for large theta(13) & combined performance with a LArTPC & T2K
• Prospects of measuring the leptonic CP phase with atmospheric neutrinos

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• What can we learn about the lepton CP phase in the next 10 years?
• Complementarity Between Hyperkamiokande and DUNE in Determining Neutrino Oscillation Parameters
• Long-Baseline Neutrino Experiments
• Effect of systematics in the T2HK, T2HKK, and DUNE experiments
• The sensitivity of the ICAL detector at India-based Neutrino Observatory to neutrino oscillation parameters
• Probing CP violation with the three years ultra-high energy neutrinos from IceCube
• Time variation of the atmospheric neutrino flux at dark matter detectors
• Synergies between neutrino oscillation experiments: An `adequate' configuration for LBNO
• Reason for T2K to run in dominant neutrino mode for detecting CP violation
• Revisiting the sensitivity studies for leptonic CP violation and mass hierarchy with T2K, NOvA and LBNE experiments
• Neutrino Physics Now and in the Near Future