Abstract
The recent global fits of neutrino oscillation data is pointing towards non-maximal value of atmospheric neutrino mixing angle (\({{\theta }_{{23}}}\)) and normal hierarchical neutrino masses at about 1.6σ and 2.5σ confidence level, respectively. The neutrino mixing matrix with cobimaximal (CBM) pattern is known to predict maximal value of \({{\theta }_{{23}}}\) (=45°) and Dirac CP phase \({{\delta }_{{{\text{CP}}}}} = {{ \pm \pi } \mathord{\left/ {\vphantom {{ \pm \pi } 2}} \right. \kern-0em} 2}\) while the solar (\({{\theta }_{{12}}}\)) and reactor (\({{\theta }_{{13}}}\)) mixing angles are arbitrary. In this work, we study a simple deviation from this mixing pattern in order to accommodate non-maximal values of \({{\theta }_{{23}}}\). Also, we have calculated the prediction for Jarlskog CP rephasing invariant \({{J}_{{{\text{CP}}}}}\), sensitive to CP violation measured in the neutrino oscillation experiments.
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ACKNOWLEDGMENTS
The authors acknowledge Department of Physics and Astronomical Science, Central University of Himachal Pradesh for providing necessary facility to carry out this work.
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Verma, S., Kumar, A. On the Deviation in Cobimaximal Neutrino Mixing Emanating from Charged Lepton Sector. Phys. Part. Nuclei Lett. 20, 1350–1356 (2023). https://doi.org/10.1134/S1547477123060390
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DOI: https://doi.org/10.1134/S1547477123060390