Preprint Article Version 1 This version is not peer-reviewed

# On the determination of the $\theta_{23}$ octant in long baseline neutrino experiments

Version 1 : Received: 29 November 2018 / Approved: 30 November 2018 / Online: 30 November 2018 (11:07:53 CET)

How to cite: Das, C.; Maalampi, J.; Pulido, J.; Vihonen, S. On the determination of the $\theta_{23}$ octant in long baseline neutrino experiments. Preprints 2018, 2018110634 (doi: 10.20944/preprints201811.0634.v1). Das, C.; Maalampi, J.; Pulido, J.; Vihonen, S. On the determination of the $\theta_{23}$ octant in long baseline neutrino experiments. Preprints 2018, 2018110634 (doi: 10.20944/preprints201811.0634.v1).

## Abstract

We study the possibility of determining the octant of the neutrino mixing angle 23, that is, whether 23 > 45 or 23 < 45, in long baseline neutrino experiments. Here we numerically derived the sensitivity limits within which these experiments can determine, by measuring the probability of the  ! e transitions, the octant of 23 with a 5 certainty. The interference of the CP violation angle  with these limits, as well as the effects of the baseline length and the run-time ratio of neutrino and antineutrino modes of the beam have been analyzed.

## Subject Areas

Neutrino oscillations; neutrino mixing; long baseline