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Title

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

AuthorsKaragiorgi, G.; Aguilar-Arevalo, A. A.; Conrad, J. M.; Shaevitz, M. H.; Whisnant, K.; Sorel, Michel ; Barger, V.
KeywordsSuper-Kamiokande Collaboration
NOMAD Experiment
[PACS] Neutrino mass and mixing
[PACS] Non-standard-model neutrinos, right-handed neutrinos, etc.
[PACS] Quark and lepton masses and mixing in electroweak interactions
Issue DateJan-2007
PublisherAmerican Physical Society
CitationPhysical Review D 75(1): 013011 (2007)
AbstractWe investigate the extent to which leptonic CP-violation in (3+2) sterile neutrino models leads to different oscillation probabilities for ((nu) over bar)(mu)->(nu) over bar (e) and nu(mu)->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 3 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.
Description8 pages, 5 figures.-- PACS nrs.: 14.60.Pq, 14.60.St, 12.15.Ff.-- ISI Article Identifier: 000243896200028.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0609177
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.75.013011
URIhttp://hdl.handle.net/10261/9115
DOI10.1103/PhysRevD.75.013011
ISSN1550-7998
Appears in Collections:(IFIC) Artículos
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