Pragmatic view of short-baseline neutrino oscillations
| Autor: | H. W. Long, Marco Laveder, Yufeng Li, Carlo Giunti |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Solar neutrino Sigma FOS: Physical sciences Solar neutrino problem Parameter space High Energy Physics - Experiment High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Neutrino detector Measurements of neutrino speed Neutrino Neutrino oscillation Astrophysics - Cosmology and Nongalactic Astrophysics |
| Popis: | 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 $\Delta{m}^2_{41}$ between 0.82 and 2.19 $\text{eV}^2$ at $3\sigma$. The case of no oscillations is disfavored by about $6\sigma$, which decreases dramatically to about $2\sigma$ if the LSND data are not considered. Hence, new high-precision experiments are needed to check the LSND signal. Comment: 6 pages. Final version published in Phys. Rev. D 88, 073008 (2013) |
| Databáze: | OpenAIRE |
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