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MiniBooNE AND A CP² = -𝟙 STERILE NEUTRINO

Department of Physics and Astronomy, Rutherford Building, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand

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and

ALEX B. NIELSEN

Department of Physics and Astronomy, Rutherford Building, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand

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https://doi.org/10.1142/S021773230702364XCited by:0 (Source: Crossref)

Abstract

It has been taken as granted that the observation of two independent mass-squared differences necessarily fixes the number of underlying mass eigenstates as three, and that the addition of a sterile neutrino provides an additional mass-squared difference. The purpose of this letter is to argue that if one considers a sterile neutrino component that belongs to the CP² = -𝟙 sector, then both of the stated claims are false. We also outline how the results reported here, when combined with the forthcoming MiniBooNE data and other experiments, can help settle the issue of the CP properties of the sterile neutrino; if such a component does indeed exist.

Keywords:

PACS: 14.60.Pq, 11.30.Er

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