Status and Perspectives of Neutrino Physics

Abstract

This review demonstrates the unique role of the neutrino by discussing in detail the physics of and with neutrinos. We deal with neutrino sources, neutrino oscillations, absolute masses, interactions, the possible existence of sterile neutrinos, and theoretical implications. In addition, synergies of neutrino physics with other research fields are found, and requirements to continue successful neutrino physics in the future, in terms of technological developments and adequate infrastructures, are stressed.

227 pages; this review of the field of neutrino physics emerged from a report written by a panel on the request of IUPAP (International Union of Pure and Applied Physics). The mandate, the panel members and the report can be found on the web page of the panel at ht tps://www.iupapneutrinopanel.org

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• Experimental Requirements to Determine the Neutrino Mass Hierarchy Using Reactor Neutrinos
• Enhanced Supernova Axion Emission and its Implications
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• Relaxing Cosmological Neutrino Mass Bounds with Unstable Neutrinos
• Where do the 3.5 keV photons come from? A morphological study of the Galactic Center and of Perseus
• Neutrino Mass Sum-rules in Flavor Symmetry Models
• Coherent Elastic Neutrino-Nucleus Scattering at the European Spallation Source
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• Measurement of the ${}^8$B Solar Neutrino Flux in SNO+ with Very Low Backgrounds
• Searching for New Physics in Two-Neutrino Double Beta Decay
• A novel technique for the measurement of the electron neutrino cross section
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• Neutrino-4 anomaly: oscillations or fluctuations?
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• Constraining Absolute Neutrino Masses via Detection of Galactic Supernova Neutrinos at JUNO
• Electron Capture in 163Ho and Overlap plus Exchange Corrections and the Neutrino Mass
• Observation of single collisionally cooled trapped ions in a buffer gas
• First antineutrino energy spectrum from ${}^{235}$U fissions with the STEREO detector at ILL
• ${}^{222}$Rn emanation measurements for the XENON1T experiment
• Neutrino vs. Antineutrino Oscillation Parameters at DUNE and Hyper-Kamiokande
• Review of Liquid Argon Detector Technologies in the Neutrino Sector
• Characterization of an Ionization Readout Tile for nEXO
• Schizophrenic Neutrinos and $\nu$-less Double Beta Decay
• Measurement of the atmospheric ${\nu }_e$ and ${\nu }_{\mu }$ energy spectra with the ANTARES neutrino telescope
• Lattice QCD Inputs for Nuclear Double Beta Decay
• Statistical Significance of Reactor Antineutrino Active-Sterile Oscillations
• Supernova neutrino detection in NOvA
• Testing Lorentz and CPT invariance with neutrinos
• The analysis of the results of the Neutrino-4 experiment on search for sterile neutrino and comparison with results of other experiments
• Measuring Anisotropies in the Cosmic Neutrino Background
• Constraining visible neutrino decay at KamLAND and JUNO
• Geoneutrinos at Jinping: Flux prediction and oscillation analysis
• Unified thermal model for photohadronic neutrino production in astrophysical sources
• Search for Light Exotic Fermions in Double-Beta Decays
• Weak structure functions in ${\nu }_l-N$ and ${\nu }_l-A$ scattering with nonperturbative and higher order perturbative QCD effects
• Quasielastic production of polarized hyperons in antineutrino--nucleon reactions
• IceCube High Energy Starting Events at 7.5 Years -- New Measurements of Flux and Flavor
• Is Left-Right Symmetry the Key?
• Stochastic Modeling of 3-D Compositional Distribution in the Crust with Bayesian Inference and Application to Geoneutrino Observation in Japan
• Measuring the electron neutrino mass with improved sensitivity: the HOLMES experiment
• The Continuous Readout Stream of the MicroBooNE Liquid Argon Time Projection Chamber for Detection of Supernova Burst Neutrinos
• Fundamental physics with high-energy cosmic neutrinos today and in the future
• Cornering (quasi) degenerate neutrinos with cosmology
• Nu Tools: Exploring Practical Roles for Neutrinos in Nuclear Energy and Security
• Background Discrimination for Neutrinoless Double Beta Decay in Liquid Xenon Using Cherenkov Light
• Standard Quantum Mechanics without observers
• Discovery probabilities of Majorana neutrinos based on cosmological data
• Non-negligible Oscillation Effects in the Crustal Geo-neutrino Calculations
• Sterile neutrino oscillometry with Jinping
• Test of Lorentz Violation with Astrophysical Neutrino Flavor
• Relativistic Cyclotron Radiation Detection of Tritium Decay Electrons as a New Technique for Measuring the Neutrino Mass
• Review of Sterile Neutrino Experiments