We present the results of global analyses of short-baseline neutrino oscillation data in 3+1, 3+2 and 3+1+1 neutrino mixing schemes. We show that the data do not allow us to abandon the simplest 3+1 scheme in favor of the more complex 3+2 and 3+1+1 schemes. We present the allowed region in the 3+1 parameter space, which is located at Δm412 between 0.82 and 2.19  eV2 at 3σ. The case of no oscillations is disfavored by about 6σ, which decreases dramatically to about 2σ if the Liquid Scintillating Neutrino Detector (LSND) data are not considered. Hence, new high-precision experiments are needed to check the LSND signal.

Pragmatic view of short-baseline neutrino oscillations

LAVEDER, MARCO;
2013

Abstract

We present the results of global analyses of short-baseline neutrino oscillation data in 3+1, 3+2 and 3+1+1 neutrino mixing schemes. We show that the data do not allow us to abandon the simplest 3+1 scheme in favor of the more complex 3+2 and 3+1+1 schemes. We present the allowed region in the 3+1 parameter space, which is located at Δm412 between 0.82 and 2.19  eV2 at 3σ. The case of no oscillations is disfavored by about 6σ, which decreases dramatically to about 2σ if the Liquid Scintillating Neutrino Detector (LSND) data are not considered. Hence, new high-precision experiments are needed to check the LSND signal.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2684654
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