Results 101 to 110 of about 3,937 (188)

Atmospheric neutrinos and discovery of neutrino oscillations

open access: yesProceedings of the Japan Academy, Series B, 2010
Neutrino oscillation was discovered through studies of neutrinos produced by cosmic-ray interactions in the atmosphere. These neutrinos are called atmospheric neutrinos. They are produced as decay products in hadronic showers resulting from collisions of cosmic rays with nuclei in the atmosphere.
openaire   +3 more sources

The Blazar TXS 0506+056 Associated with a High-energy Neutrino: Insights into Extragalactic Jets and Cosmic-Ray Acceleration

open access: yesThe Astrophysical Journal Letters, 2018
A neutrino with energy ∼290 TeV, IceCube-170922A, was detected in coincidence with the BL Lac object TXS 0506+056 during enhanced gamma-ray activity, with chance coincidence being rejected at ∼3 σ level.
S. Ansoldi   +148 more
doaj   +1 more source

The decays "neutrino{heavy} -> neutrino{light} + photon" and "neutrino{heavy} -> neutrino{light} e+ e-" of massive neutrinos

open access: yes, 1999
If, as recently reported by the Super-Kamiokande collaboration, the neutrinos are massive, the heaviest one would not be stable and, though chargeless, could in particular decay into a lighter neutrino and a photon by quantum loop effects. The corresponding rate is computed in the standard model with massive Dirac neutrinos as a function of the ...
Ho-Kim, Q., Machet, B., Pham, X. Y.
openaire   +2 more sources

The Physics of Core-Collapse Supernovae: Explosion Mechanism and Explosive Nucleosynthesis

open access: yesUniverse
Recent developments in multi-dimensional simulations of core-collapse supernovae have considerably improved our understanding of this complex phenomenon.
Luca Boccioli, Lorenzo Roberti
doaj   +1 more source

Galaxy Clusters in Dark Matter Window: The Case of the Shapley Supercluster

open access: yesUniverse
Dark matter dominates the matter content of the Universe, yet its particle nature remains elusive. Among the promising multi-messenger astronomy dark matter candidates are weakly interacting massive particles and superheavy dark matter, both of which may
Maksym Stepanov   +4 more
doaj   +1 more source

Neutrino mixing

open access: yesJournal of Physics G: Nuclear and Particle Physics, 1991
In the first part of these lectures the neutrino mixing hypothesis will be considered in detail. We will discuss the possible schemes of neutrino mixing and present the data of the recent experiments searching for effects due to nonvanishing neutrino masses and mixing angles.In the second part of these lectures the physics of solar neutrinos will be ...
openaire   +2 more sources

On massive neutrinos and coherence in neutrino oscillations

open access: yesNuclear Physics B
We examine the central tenet of the current standard theory of neutrino oscillations, namely the assumption that neutrinos are emitted and detected as flavour neutrino states, which are coherent superpositions of massive neutrino states of different masses.
openaire   +3 more sources

Hillas meets Eddington: The case for blazars as ultra-high-energy neutrino sources

open access: yesAstronomy & Astrophysics
Context. Jetted active galactic nuclei aligned with our line of sight known as blazars are promising high-energy neutrino source candidates. However, leptohadronic models face challenges in describing neutrino emission within a viable energy budget and ...
Rodrigues X.   +3 more
doaj   +1 more source

Fock state probability changes in open quantum systems. [PDF]

open access: yesEur Phys J C Part Fields
Burrage C, Käding C.
europepmc   +1 more source

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