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Recent results on solar neutrinos provide hints that the LMA MSW solution could be correct. We perform accurate calculations for potential `smoking-gun' effects of the LMA solution in the SuperKamiokande solar neutrino experiment,…

High Energy Physics - Phenomenology · Physics 2016-08-25 J. N. Bahcall , P. I. Krastev , A. Yu. Smirnov

For standard neutrinos, recent solar neutrino results together with the assumption of a nuclearly powered Sun imply severe constraints on the individual components of the total neutrino flux: \Phi_{Be}<0.7*10^9cm^-2 s^-1, \Phi_{CNO}<…

We present a search for low energy antineutrino events coincident with the gravitational wave events GW150914 and GW151226, and the candidate event LVT151012 using KamLAND, a kiloton-scale antineutrino detector. We find no inverse…

We study the sensitivity of atmospheric neutrino experiments to the neutrino non-standard interactions (NSI) which is motivated by the tension between the two mass squared differences extracted from the KamLAND and solar neutrino…

High Energy Physics - Phenomenology · Physics 2016-09-26 Shinya Fukasawa

Continuing previous work, a model independent analysis of the solar neutrino anomaly is performed in terms of neutrino oscillations, allowing a comparison with the predictions of the Standard Solar Model. SMA and LMA solutions emerge also…

High Energy Physics - Phenomenology · Physics 2009-10-31 Riccardo Barbieri , Alessandro Strumia

In a previous paper [1], we presented a three-flavour oscillation analysis of the solar neutrino measurements and of the first data from the KamLAND experiment, in terms of the relevant mass-mixing parameters (delta m^2, theta_12,…

High Energy Physics - Phenomenology · Physics 2009-10-07 G. L. Fogli , E. Lisi , A. Marrone , D. Montanino , A. Palazzo , A. M. Rotunno

KamLAND is a reactor neutrino oscillation experiment with a very long baseline. This experiment successfully measured oscillation phenomena of reactor antineutrinos coming mainly from 53 reactors in Japan. In order to extract the results,…

Data Analysis, Statistics and Probability · Physics 2008-11-26 K. Nakajima , K. Inoue , K. Owada , F. Suekane , A. Suzuki , G. Hirano , S. Kosaka , T. Ohta , H. Tanaka

The 8B solar neutrino flux inferred from a global analysis of solar neutrino experiments is within 11% (1 sigma) of the predicted standard solar model value if only active neutrinos exist, but could be as large as 1.7 times the standard…

High Energy Physics - Phenomenology · Physics 2009-11-07 John N. Bahcall , M. C. Gonzalez-Garcia , C. Pena-Garay

The Super-Kamiokande best global fit, which includes data from SNO, Gallium and Chlorine experiments, results in a hep neutrino contribution to the signals that, even after oscillation, is greater than the SSM prediction. The solar hep…

High Energy Physics - Phenomenology · Physics 2014-11-17 Massimo Coraddu , Marcello Lissia , Giuseppe Mezzorani , Piero Quarati

There are reasons to believe that mechanisms exist in the solar interior which lead to random density perturbations in the resonant region of the Large Mixing Angle solution to the solar neutrino problem. We find that, in the presence of…

High Energy Physics - Phenomenology · Physics 2011-08-17 M. M. Guzzo , P. C. de Holanda , N. Reggiani

We review the present status of global analyses of neutrino oscillations, taking into account the most recent neutrino data including the latest KamLAND and K2K updates presented at Neutrino2004, as well as state-of-the-art solar and…

High Energy Physics - Phenomenology · Physics 2009-09-17 M. Maltoni , T. Schwetz , M. A. Tortola , J. W. F. Valle

O(1) eV sterile neutrino can be responsible for a number of anomalous results of neutrino oscillation experiments. This hypothesis may be tested at short base-line neutrino oscillation experiments, several of which are either ongoing or…

High Energy Physics - Phenomenology · Physics 2018-04-11 Vladislav Barinov , Bruce Cleveland , Vladimir Gavrin , Dmitry Gorbunov , Tatiana Ibragimova

Time-frequency analysis of data from the GALLEX and GNO solar neutrino experiments shows that some features in power-spectrum analyses of those datasets are due to aliasing. We normalize data for each of the four experiments in the GALLEX…

High Energy Physics - Phenomenology · Physics 2008-08-11 P. A. Sturrock

We study the effect of random magnetic fields in the spin-flavor precession of solar neutrinos in a three generation context, when a non-vanishing transition magnetic moment is assumed. While this kind of precession is strongly constrained…

High Energy Physics - Phenomenology · Physics 2009-11-11 M. M. Guzzo , P. C. de Holanda , O. L. G. Peres

We determine the sensitivity of the KamLAND and Borexino experiments to the neutrino regeneration effect in the Earth as a function of Delta m^2 and theta, using realistic numbers for the signal and background rates. We compare the results…

High Energy Physics - Phenomenology · Physics 2015-06-25 Andre de Gouvea , Alexander Friedland , Hitoshi Murayama

An updated analysis of all available neutrino oscillation evidence in Solar experiments including the latest $SNO$ data is presented. Predictions for total rates and day-night asymmetry in Borexino are calculated. Our analysis features the…

High Energy Physics - Phenomenology · Physics 2014-11-17 P. Aliani , V. Antonelli , M. Picariello , E. Torrente-Lujan

Neutrino absorption cross sections for 71Ga are calculated for all solar neutrino sources with standard energy spectra, and for laboratory sources of 51Cr and 37Ar; the calculations include, where appropriate, the thermal energy of fusing…

High Energy Physics - Phenomenology · Physics 2008-11-26 John N. Bahcall

Sub-MeV solar neutrino experiments and long-baseline reactor oscillation experiments toe the cutting edge of neutrino research. The upcoming experiments KamLAND and BOREXINO, currently in their startup and final construction phase…

High Energy Physics - Experiment · Physics 2015-06-25 Stefan Schoenert

We perform a fit of solar neutrino data in the framework of the two four-neutrino schemes that are compatible with the results of all neutrino oscillation experiments. These schemes allow simultaneous transitions of solar nu_e's into active…

High Energy Physics - Phenomenology · Physics 2009-10-31 C. Giunti , M. C. Gonzalez-Garcia , C. Pena-Garay
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