The next-generation liquid-scintillator neutrino observatory LENA

Abstract

We propose the liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) as a next-generation neutrino observatory on the scale of 50 kt. The outstanding successes of the Borexino and KamLAND experiments demonstrate the large potential of liquid-scintillator detectors in low-energy neutrino physics. LENA's physics objectives comprise the observation of astrophysical and terrestrial neutrino sources as well as the investigation of neutrino oscillations. In the GeV energy range, the search for proton decay and long-baseline neutrino oscillation experiments complement the low-energy program. Based on the considerable expertise present in European and international research groups, the technical design is sufficiently mature to allow for an early start of detector realization.

Whitepaper for the LENA low-energy neutrino detector, 67 pages, 32 figures

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• Experimental Determination of the Antineutrino Spectrum of the Fission Products of ${}^{238}$U
• Search for extraterrestrial antineutrino sources with the KamLAND detector
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• Neutrino Emission as Diagnostics of Core-Collapse Supernovae
• New Sensitivity to Solar WIMP Annihilation using Low-Energy Neutrinos
• KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars
• Getting the Most from Detection of Galactic Supernova Neutrinos in Future Large Liquid-Scintillator Detectors
• Theory of elastic neutrino-electron scattering
• An improved method for measuring muon energy using the truncated mean of dE/dx
• Diffuse supernova neutrinos: oscillation effects, stellar cooling and progenitor mass dependence
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• Reference worldwide model for antineutrinos from reactors
• The Transient Gravitational-Wave Sky
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• Precision ${\bar{\nu }}_e$-electron Scattering Measurements with IsoDAR to Search for New Physics
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• Detectable MeV neutrinos from black hole neutrino-dominated accretion flows
• Spectral Photon Sorting For Large-Scale Cherenkov and Scintillation Detectors
• Geo-neutrinos
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• Black hole hyperaccretion in collapsars. I. MeV neutrinos
• Short-baseline Neutrino Oscillation Waves in Ultra-large Liquid Scintillator Detectors
• Neutral-current background induced by atmospheric neutrinos at large liquid-scintillator detectors: II. Methodology for in situ measurements
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• Short Baseline Reactor Antineutrino-Electron Scattering Experiments and Non-Standard Neutrino Interactions at Source and Detector
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• Using Fast Photosensors in Water Cherenkov Neutrino Detectors
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