Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino oscillation hypothesis

Details Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino oscillation hypothesis Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino oscillation hypothesis

2006-09-18

arxiv.org/abs/hep-ph/0609177v3

Phys.Rev.D75:013011,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Fixed a typo following PRD Erratum. 8 pages, 5 figures

Scientific paper

10.1103/PhysRevD.75.013011

We investigate the extent to which leptonic CP-violation in (3+2) sterile neutrino models leads to different oscillation probabilities for $\bar{\nu}_{\mu}\to\bar{\nu}_e$ and $\nu_{\mu}\to\nu_e$ oscillations at MiniBooNE. We are using a combined analysis of short-baseline (SBL) oscillation results, including the LSND and null SBL results, to which we impose additional constraints from atmospheric oscillation data. We obtain the favored regions in MiniBooNE oscillation probability space for both (3+2) CP-conserving and (3+2) CP-violating models. We further investigate the allowed CP-violation phase values and the MiniBooNE reach for such a CP violation measurement. The analysis shows that the oscillation probabilities in MiniBooNE neutrino and antineutrino running modes can differ significantly, with the latter possibly being as much as three times larger than the first. In addition, we also show that all possible values of the single CP-violation phase measurable at short baselines in (3+2) models are allowed within 99% CL by existing data.

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