Neutrinos from Stellar Collapse: Effects of flavour mixing

Abstract

We study the effect of non-vanishing masses and mixings among neutrino flavours on the detection of neutrinos from stellar collapse by a water Cerenkov detector. We consider a realistic framework in which there are three neutrino flavours whose mass squared differences and mixings are constrained by the present understanding of solar and atmospheric neutrinos. We also include the effects of high dense matter within the supernova core. We find that the number of events due to the dominant process involving electron-antineutrinos may change dramatically for some allowed mixing parameters. Furthermore, contributions from charged-current scattering off oxygen atoms in the detector can be considerably enhanced due to flavour mixing; such events have a distinct experimental signature since they are backward-peaked. Hence, mixing has a non-trivial effect on the signature of neutrinos (and antineutrinos) from stellar collapse.

22 pages Latex file, with 6 postscript figures, minor changes made in text

References in corpus (6)

• The angular distribution of the reaction ${\bar{\nu }}_e+p\to e^{+}+n$
• Non-adiabatic Level Crossing in Resonant Neutrino Oscillations
• Super-Kamiokande data and atmospheric neutrino decay
• Effect of Flavour Oscillations on the Detection of Supernova Neutrinos
• Implications of Solar and Atmospheric Neutrinos
• Establishing a nu_{mu,tau} Component in the Solar Neutrino Flux

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• Supernova neutrino oscillations: A simple analytical approach
• Turbulent Supernova Shock Waves and the Sterile Neutrino Signature in Megaton Water Detectors
• Supernova neutrinos: difference of nu_mu - nu_tau fluxes and conversion effects
• Earth effects on supernova neutrinos and their implications for neutrino parameters
• Probing neutrino oscillations from supernovae shock waves via the IceCube detector
• Study of the effect of neutrino oscillations on the supernova neutrino signal in the LVD detector
• Confusing Sterile Neutrinos with Deviation from Tribimaximal Mixing at Neutrino Telescopes
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• Effects of neutrino oscillations on the supernova signal in LVD
• Neutrinos from Stellar Collapse: Comparison of the effects of three and four flavour mixings
• Effects of neutrino temperatures and mass hierarchies on the detection of supernova neutrinos
• Testing CPT Symmetry with Supernova Neutrinos
• The Mikheyev-Smirnov-Wolfenstein Matter Potential at the One-loop Level in the Standard Model
• How precisely can we reduce the three-flavor neutrino oscillation to the two-flavor one only from (δm^2_{12})/(δm^2_{13}) <~ 1/15 ?