CP-violation due to Majorana phase in two flavour neutrino oscillations

• DOI: 10.48550/arxiv.2207.09480
• Publication Date: 2022-01-01
• Authors: Dixit, Khushboo; Pradhan, Akhila K...; Sankar, S. Uma
• Keywords: High Energy Physics - Phenomenology (hep-ph); FOS: Physical sciences

4 pages, Typos corrected<br/>We study the conditions under which the Majorana phase of the two flavour neutrino mixing matrix appears in the oscillation probabilities and causes $CP$-violation. We find that the Majorana phase remains in the neutrino evolution equation if the neutrino decay eigenstates are not aligned with the mass eigenstates. We show that, in general, two kinds of $CP$-violation are possible: one due to the Majorana phase and the other due to the phase of the off-diagonal element of the neutrino decay matrix. We find that the $CP$ violating terms in the oscillation probabilities are also sensitive to neutrino mass ordering.<br/>