Results 1 to 10 of about 24,875 (211)

The Solar Neutrino Problem - An Update [PDF]

open access: yesPhysics Reports, 1998
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 ...
Adelberger   +46 more
core   +5 more sources

Constraints on decay plus oscillation solutions of the solar neutrino problem [PDF]

open access: green, 2002
We examine the constraints on non-radiative decay of neutrinos from the observations of solar neutrino experiments. The standard oscillation hypothesis among three neutrinos solves the solar and atmospheric neutrino problems.
A. Acker   +31 more
core   +4 more sources

Two-Loop Neutrino Masses and the Solar Neutrino Problem [PDF]

open access: yesPhysical Review D, 1993
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.
A. B. Lahanes   +31 more
core   +7 more sources

Is bi-maximal mixing compatible with the large angle MSW solution of the solar neutrino problem? [PDF]

open access: green, 1998
It is shown that the large angle MSW solution of the solar neutrino problem with a bi-maximal neutrino mixing matrix implies an energy-independent suppression of the solar nu_e flux.
A.J. Baltz   +27 more
core   +4 more sources

The Relevance of Nuclear Reactions for Standard Solar Models Construction

open access: yesFrontiers 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

Statistical significance of the sterile-neutrino hypothesis in the context of reactor and gallium data

open access: yesJournal 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

open access: yesNuclear 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

open access: yesThe 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

Standard Solar Neutrinos [PDF]

open access: yes, 1996
An improved standard solar model has been used to calculate the fluxes of standard solar neutrinos. It includes premain sequence evolution, element diffusion, partial ionization effects, and all the possible nuclear reactions between the main elements ...
Anders   +47 more
core   +2 more sources

The Solar Neutrino Problem [PDF]

open access: yesAnnual 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   +2 more sources

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