Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-07-23
JHEP 1010:115,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
28 pages, 9 figures, discussion improved, new appendix added, conclusions unchanged
Scientific paper
10.1007/JHEP10(2010)115
The recently observed event excess in MiniBooNE anti-neutrino data is in agreement with the LSND evidence for electron anti-neutrino appearance. We propose an explanation of these data in terms of a (3+1) scheme with a sterile neutrino including non-standard neutrino interactions (NSI) at neutrino production and detection. The interference between oscillations and NSI provides a source for CP violation which we use to reconcile different results from neutrino and anti-neutrino data. Our best fit results imply NSI at the level of a few percent relative to the standard weak interaction, in agreement with current bounds. We compare the quality of the NSI fit to the one obtained within the (3+1) and (3+2) pure oscillation frameworks. We also briefly comment on using NSI (in an effective two-flavour framework) to address a possible difference in neutrino and anti-neutrino results from the MINOS experiment.
Akhmedov Evgeny
Schwetz Thomas
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