Results 1 to 10 of about 276 (129)
The Solar Neutrino Problem [PDF]
Annual Review of Astronomy and Astrophysics, 1995 The solar neutrino problem has persisted for almost three decades. Recent results from Kamiokande, SAGE, and GALLEX indicate a pattern of neutrino fluxes that is very difficult to reconcile with plausible variations in standard solar models. This situation is reviewed, and suggested particle physics solutions are discussed.
openaire +4 more sources
The solar neutrino problem – an update [PDF]
Physics Reports, 1999 The $^8$B solar neutrino flux as measured by Super-Kamiokande is consistent with the $^{37}$Ar production rate in $^{37}$Cl at Homestake. GALLEX and SAGE, continue to observe $^{71}$Ge production rates in $^{71}$Ga that are consistent with the minimal signal expected from the solar luminosity. The observed $^8$B solar neutrino flux is in good agreement
Dar, Arnon, Shaviv, Giora
openaire +4 more sources
The Relevance of Nuclear Reactions for Standard Solar Models Construction
Frontiers in Astronomy and Space Sciences, 2021 The fundamental processes by which nuclear energy is generated in the Sun have been known for many years. However, continuous progress in areas such as neutrino experiments, stellar spectroscopy and helioseismic data and techniques requires ever more ...
Francesco L. Villante +3 more
doaj +1 more source
Journal of High Energy Physics, 2022 We evaluate the statistical significance of the 3+1 sterile-neutrino hypothesis using ν e and ν ¯ $$ \overline{\nu} $$ e disappearance data from reactor, solar and gallium radioactive source experiments.
Jeffrey M. Berryman +4 more
doaj +1 more source
Implications of the Dark-LMA solution for neutrino mass matrices
Nuclear Physics B, 2021 In this work we have re-investigated two different kinds of texture zero ansatz of the low energy neutrino mass matrix in view of the Dark-Large-Mixing-Angle (DLMA) solution of the solar neutrino problem which can arise in the presence of non-standard ...
Monojit Ghosh +2 more
doaj +1 more source
Neutrinos and Asteroseismology of Stars over the Helium Flash
The Astrophysical Journal, 2023 The helium flash, occurring in stars of 0.6–2.0 M _⊙ at the end of the red giant branch, is not observable via optical means due to the energy of the process being used to lift the core out of degeneracy.
Diogo Capelo, Ilídio Lopes
doaj +1 more source
Analysis of Solar Neutrino Data from Super-Kamiokande I and II
Entropy, 2014 We are going back to the roots of the original solar neutrino problem: the analysis of data from solar neutrino experiments. The application of standard deviation analysis (SDA) and diffusion entropy analysis (DEA) to the Super-Kamiokande I and II data ...
Hans J. Haubold +2 more
doaj +1 more source
Two-loop neutrino masses and the solar neutrino problem [PDF]
Physical Review D, 1994 The addition of $m$ singlet right-handed neutrinos to the Standard Model leads to radiatively generated mass corrections for the $SU(2)_L $ doublet neutrinos. For those neutrinos which are massless at the tree level after this addition, this implies a small mass generated at the two-loop level via $W^{\pm}$ exchange. We calculate these mass corrections
Choudhury, Debajyoti +3 more
openaire +3 more sources
The Nature of Massive Neutrinos
Advances in High Energy Physics, 2013 The compelling experimental evidences for oscillations of solar, reactor, atmospheric, and accelerator neutrinos imply the existence of 3-neutrino mixing in the weak charged lepton current.
S. T. Petcov
doaj +1 more source
Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos
European Physical Journal C: Particles and Fields, 2018 A first measurement of neutrinos from the CNO fusion cycle in the Sun would allow a resolution to the current solar metallicity problem. Detection of these low-energy neutrinos requires a low-threshold detector, while discrimination from radioactive ...
R. Bonventre, G. D. Orebi Gann
doaj +1 more source