Reconstructing supernova-neutrino spectra using low-energy beta-beams

Abstract

Only weakly interacting, neutrinos are the principal messengers reaching us from the center of a supernova. Terrestrial neutrino telescopes, such as SNO and SuperKamiokande, can provide precious information about the processes in the core of a collapsing and exploding star. But the information about the supernova that a neutrino detector can supply, is restricted by the fact that little experimental data on the neutrino-nucleus cross sections exists and by the uncertainties in theoretical calculations. In this letter, we propose a novel procedure that determines the response of a target nucleus in a supernova-neutrino detector directly, by using low-energy beta-beams. We show that fitting 'synthetic' spectra, constructed by taking linear combinations of beta-beam spectra, to the original supernova-neutrino spectra reproduces the folded differential cross sections very accurately. Comparing the response in a terrestrial detector to these synthetic responses provides a direct way to determine the main parameters of the supernova-neutrino energy-distribution.

4 pages

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• Impact of low-energy nuclear excitations on neutrino-nucleus scattering at MiniBooNE and T2K kinematics
• Untangling supernova-neutrino oscillations with beta-beam data
• Modeling quasielastic interactions of monoenergetic kaon decay-at-rest neutrinos
• Forbidden transitions in neutral and charged current interactions between low-energy neutrinos and Argon
• Lepton kinematics in low energy neutrino-Argon interactions
• Constraining sterile neutrinos with a low energy beta-beam
• $A$-dependence of quasielastic charged-current neutrino-nucleus cross sections
• Gross Theory Model for Neutrino-Nucleus Cross Section
• Low-energy neutrinos at off-axis from a standard beta-beam
• Cross sections for coherent elastic and inelastic neutrino-nucleus scattering
• Manipulating a Neutrino Spectrum to Maximize the Physics Potential from a Low Energy Beta Beam
• Search for new physics with neutrinos at Radioactive Ion Beam facilities
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• Neutrinos, Weak Interactions, and r-process Nucleosynthesis
• Core-collapse supernova neutrinos and neutrino properties
• Constraining sterile neutrinos with a low energy beta-beam
• Significance of neutrino cross-sections for astrophysics
• Simulated neutrino signals of low and intermediate energy neutrinos on Cd detectors
• Probe of anomalous neutrino couplings to W and Z in medium energy setup of a beta-beam facility
• Search for CP violation in the lepton sector