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arXiv · 1701.08997

Hierarchy independent sensitivity to leptonic {\delta}_CP with atmospheric neutrinos

D Indumathi·M V N Murthy·Lakshmi S. Mohan
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Abstract

The Dirac leptonic CP phase {\delta}_CP is one of the crucial unknown parameters in neutrino oscillation physics. In this paper we explore the possibility of using low energy atmospheric neutrino events to probe {\delta}_CP . We show that at sub GeV energies, when the events are binned as a function of the energy and direction of the final state leptons, a consistent distinction between various true {\delta}_CP values is obtained. We also show that at these energies there is no sensitivity to the mass ordering/hierarchy, so that {\delta}_CP can be measured without hierarchy ambiguity. In addition a preliminary \c{hi}^2 analysis of the sensitivity to {\delta}_CP using atmospheric neutrinos assuming a generic detector with perfect separation between charged current {\nu}_{\mu} , \bar{{\nu}}_{\mu} , {\nu}_e and \bar{{\nu}}_e events is given.

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D Indumathi, M V N Murthy, Lakshmi S. Mohan. 2017-01-31. Hierarchy independent sensitivity to leptonic {\delta}_CP with atmospheric neutrinos. https://doi.org/10.1103/physrevd.100.115027

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