Probing Majorana neutrino CP phases and masses in neutrino–antineutrino conversion

• DOI: 10.1016/j.physletb.2010.08.068
• Publication Date: 2010-09-04T11:06:35Z
• Authors: David Delepine; Vannia González M...; Shaaban Khalil; Gabriel López Castro
• Keywords: CP Majorana phase; Minos; Neutrino oscillation; Long base; 0103 physical sciences; 01 natural sciences

AbstractWe propose a new strategy for detecting the CP-violating phases and the effective mass of muon Majorana neutrinos by measuring observables associated with neutrino–antineutrino oscillations in π± decays. Within the generic framework of quantum field theory, we compute the non-factorizable probability for producing a pair of same-charged muons in π± decays as a distinctive signature of νμ−νμ¯ oscillations. We show that an intense neutrino beam through a long baseline experiment is favored for probing the Majorana phases. Using the neutrino–antineutrino oscillation probability reported by MINOS Collaboration, a new stringent bound on the effective muon-neutrino mass is derived.