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T: Fachverband Teilchenphysik

T 41: Neutrinophysik (Theorie)

T 41.7: Vortrag

Montag, 24. März 2014, 18:15–18:30, P108

Adiabatic active-sterile neutrino conversion in asymmetrically warped extra dimensions — •Philipp Sicking and Heinrich Päs — Fakultät für Physik, Technische Universität Dortmund, 44221 Dortmund, Germany

The search for sterile neutrinos is motivated by the LSND and MiniBooNE, reactor and Gallium anomalies. The fact that this evidence is partly conflicting can be a consequence of either experimental systematics or of non-standard neutrino properties.

Here we discuss the 1+1 active-sterile neutrino-mixing resulting from the altered dispersion relations of sterile neutrinos oscillating around a 3+1 brane in an asymmetrically warped extra dimension.

In the adiabatic limit an MSW-like effect arises which drives the active neutrinos to be converted back and forth into sterile ones resulting in an baseline dependent conversion probability and superluminal shortcuts.

The conditions for this effect and the length of the shortcut are calculated in dependence of vacuum-mixing-angle, mass squared difference, energy and warp factor.