Results from solar-neutrino experiments

1996 ◽  
Vol 19 (6) ◽  
pp. 821-833 ◽  
Author(s):  
T. A. Kirsten
Keyword(s):  
Solar Neutrino ◽  
Neutrino Experiments

SOLAR NEUTRINOS WITH EXOTIC SCATTERING

1993 ◽  
Vol 08 (14) ◽  
pp. 1273-1284 ◽  
Author(s):  
JOÃO PULIDO
Keyword(s):  
Elastic Scattering ◽  
Solar Neutrino ◽  
Solar Neutrinos ◽  
The Sun ◽  
Neutral Currents ◽  
Neutrino Scattering ◽  
Flavor Changing ◽  
Lepton Decays ◽  
Neutrino Experiments ◽  
Vacuum Mixing

The possibility of unconventional neutrino scattering in the Sun via flavor changing neutral currents as a possible source of the solar neutrino deficit is investigated. If the effect is really significant, a resonant process will occur. Taking into account the neutrino deficit reported by the solar neutrino experiments (Kamiokande II, SAGE Gallex), one finds Δ2m21 = (0.6–1.4) × 10−5 eV 2 with no vacuum mixing and 0.16 ≤ fex ≤ 0.34 where fex is the lepton violating coupling. Our understanding of the neutrino phenomenon in the Sun may be improved through accuracy improvements in experiments measuring νee− elastic scattering or others searching for exotic lepton decays.

Solar Neutrino Experiments

2018 ◽  
pp. 95-96
Author(s):  
Davis
Keyword(s):  
Solar Neutrino ◽  
Neutrino Experiments

scholarly journals Investigating Sterile Neutrino Flux in the Solar Neutrino Data

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Ankush ◽  
Rishu Verma ◽  
Gazal Sharma ◽  
B. C. Chauhan
Keyword(s):  
Solar Neutrino ◽  
Particle Physics ◽  
Sterile Neutrino ◽  
Neutrino Flux ◽  
Solar Neutrinos ◽  
Neutrino Energy ◽  
Fourth Degree ◽  
Solar Neutrino Flux ◽  
Neutrino Experiments ◽  
Solar Phase

There are compelling evidences for the existence of a fourth degree of freedom of neutrinos, i.e., sterile neutrino. In the recent studies the role of sterile component of neutrinos has been found to be crucial, not only in particle physics, but also in astrophysics and cosmology. This has been proposed to be one of the potential candidates of dark matter. In this work we investigate the updated solar neutrino data available from all the relevant experiments including Borexino and KamLAND solar phase in a model independent way and obtain bounds on the sterile neutrino component present in the solar neutrino flux. The mystery of the missing neutrinos is further deepening as subsequent experiments are coming up with their results. The energy spectrum of solar neutrinos, as predicted by Standard Solar Models (SSM), is seen by neutrino experiments at different parts as they are sensitive to various neutrino energy ranges. It is interesting to note that more than 98% of the calculated standard model solar neutrino flux lies below 1 MeV. Therefore, the study of low energy neutrinos can give us better understanding and the possibility of knowing about the presence of antineutrino and sterile neutrino components in solar neutrino flux. As such, this work becomes interesting as we include the data from medium energy (~1 MeV) experiments, i.e., Borexino and KamLAND solar phase. In our study we retrieve the bounds existing in literature and rather provide more stringent limits on sterile neutrino (νs) flux available in solar neutrino data.

scholarly journals ANALYSIS OF NEUTRINO OSCILLATION IN THREE-FLAVOR NEUTRINOS

1999 ◽  
Vol 14 (12) ◽  
pp. 1953-1974 ◽  
Author(s):  
T. SAKAI ◽  
O. INAGAKI ◽  
T. TESHIMA
Keyword(s):  
Neutrino Oscillation ◽  
Zenith Angle ◽  
Small Angle ◽  
Solar Neutrino ◽  
Atmospheric Neutrino ◽  
Large Angle ◽  
Angle Dependence ◽  
Significant Difference ◽  
Neutrino Experiments

We analyze the solar, terrestrial and atmospheric neutrino experiments including SuperKamiokande data using the three-flavor neutrinos framework and obtain the allowed region for parameters [Formula: see text]. In solar neutrino experiments, we obtain the large angle solution [Formula: see text] and small angle solution (3×10-6-1.2×10-5 eV 2, 0.003-0.01) for θ13=0°-20°. From the terrestrial and atmospheric neutrino experiments including the sub-GeV and multi-GeV zenith angle dependence in SuperKamiokande 535 days data, we found that the νμ-ντ mixing is large and the range of [Formula: see text] as 0.02~0.0002  eV 2. There is no significant difference between large θ12 angle solution and small one.

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