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Motivated by the increasing precision of neutrino oscillation data, we study the corrections to the TM$_2$ neutrino mixing framework, emanating from $(1,2)$ sector of the charged lepton, for both the standard LMA and dark-LMA solutions. We…

High Energy Physics - Phenomenology · Physics 2026-05-15 Ayush Kumar Singh , Tapender , Labh Singh , Surender Verma

We analyze the 1258-day Super-Kamiokande day and night solar neutrino energy spectra with various $\chi^2$ definitions. The best-fit lies in the LMA region at $(\Delta m^2, tan^2 \theta)=(5.01\times 10^{-5} eV^2, 0.60)$, independently of…

High Energy Physics - Phenomenology · Physics 2010-05-28 V. Barger , D. Marfatia , K. Whisnant , B. P. Wood

If the solution to the solar neutrino puzzle falls in the LMA region, KamLAND should be able to measure with good precision the corresponding oscillation parameters after a few years of data taking. Assuming a positive signal, we study…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. C. Gonzalez-Garcia , C. Peña-Garay

We present a generalization of the resonant neutrino conversion in matter, including a random component in the matter density profile. The study is focused on the effect of such matter perturbations upon both large and small mixing angle…

High Energy Physics - Phenomenology · Physics 2007-05-23 H. Nunokawa , A. Rossi , V. B. Semikoz , J. W. F. Valle

We analyze the existing solar neutrino experiment data and show the allowed regions. The result from SNO's salt phase itself restricts quite a lot the allowed region's area. Reactor neutrinos play an important role in determining…

High Energy Physics - Phenomenology · Physics 2014-11-18 Q. Y. Liu , B. L. Chen , J. Zhou , M. J. Luo , S. C. Jing

We consider the impact of the recent KamLAND data on neutrino oscillations, the first terrestrial neutrino experiment that can probe the solar neutrino anomaly. By combining the first 145.1 days of KamLAND data with the full sample of…

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

The three neutrino Zee model and its extension including three active and one sterile species are studied in the light of new neutrino oscillation data. We obtain analytical relations for the mixing angle in solar oscillations in terms of…

High Energy Physics - Phenomenology · Physics 2009-11-07 Probir Roy , Sudhir K. Vempati

We study the possibility of texture zeros in Majorana light neutrino mass matrix in the light of dark large mixing angle (DLMA) solution to solar neutrino problem where solar mixing angle ($\sin^2{\theta_{12}}\simeq 0.7 $) lies in the…

High Energy Physics - Phenomenology · Physics 2020-12-02 Happy Borgohain , Debasish Borah

We examine whether the inverted hierarchical model of neutrinos is compatible with the explanation of the large mixing angles (LMA)MSW solution of the solar neutrino problem. The left-handed Majorana neutrino mass matrix for the inverted…

High Energy Physics - Phenomenology · Physics 2007-05-23 Mahadev Patgiri , N. Nimai Singh

Recent SNO results give strong evidence that the solar neutrinos undergo the flavor conversion. Main issue now is the identification of the mechanism of conversion. The LMA MSW solution with $\Delta m^2 = (5 - 7) \cdot 10^{-5}$ eV$^2$,…

High Energy Physics - Phenomenology · Physics 2011-01-31 A. Yu. Smirnov

The flatness of the SuperKamiokande neutrino electron scattering spectrum and the apparent downturn of the charged current spectrum in the SNO data which the Large Mixing Angle solution (LMA) to the solar neutrino problem fails to predict…

High Energy Physics - Phenomenology · Physics 2013-10-02 Joao Pulido , C. R. Das

We show that in see-saw models with bimaximal lepton mixing at the GUT scale and with zero CP phases, the solar mixing angle theta_{12} generically evolves towards sizably smaller values due to Renormalization Group effects, whereas the…

High Energy Physics - Phenomenology · Physics 2009-11-07 Stefan Antusch , Joern Kersten , Manfred Lindner , Michael Ratz

We analyze the expected signals of two future neutrino experiments, kamLAND and BOREXINO. We show that with just these experiments, we will hopefully be able to determine which of the existing solutions to the solar neutrino problem is the…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. Aliani , V. Antonelli , R. Ferrari , M. Picariello , E. Torrente-Lujan

We determine the neutrino parameters for MSW and vacuum oscillations (active and sterile neutrinos) that are allowed by the separate, and collective, imposition of the constraints from total event rates in the chlorine, GALLEX, SAGE, and…

High Energy Physics - Phenomenology · Physics 2009-03-02 J. N. Bahcall , P. I. Krastev , A. Yu. Smirnov

Assuming 3 neutrino mixing and massive Majorana neutrinos, we analyze the implications of the results of the solar neutrino experiments, including the latest SNO data, which favor the LMA MSW solution of the solar neutrino problem with…

High Energy Physics - Phenomenology · Physics 2010-04-05 S. Pascoli , S. T. Petcov

Single right-handed neutrino dominance (SRHND) in the 23 sector of the light effective neutrino mass matrix has been proposed as a natural explanation for the concurrent large 23 mixing angle and large 23 mass hierarchy. In this paper we…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. F. King

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

Assuming positive observation of neutrinoless double bata decay together with the CHOOZ reactor bound, we derive constraints imposed on neutrino mixing parameters, the solar mixing angle \theta_{12} and the observable mass parameter < m…

High Energy Physics - Phenomenology · Physics 2017-08-23 Hisakazu Minakata , Hiroaki Sugiyama

The upcoming reactor neutrino experiment, KamLAND, has the ability to explore the Large Mixing Angle (LMA) solution to the solar neutrino problem. Here, we investigate the precision to which KamLAND should be able to measure these…

High Energy Physics - Phenomenology · Physics 2009-09-29 H. Murayama , A. Pierce

We analyze with the Bayesian method the solar and KamLAND neutrino data in terms of neutrino oscillations. We show that Bayesian credible regions with a flat prior in the tan^2(theta12)--(Delta m^2)_21 plane strongly support the LMA…

High Energy Physics - Phenomenology · Physics 2009-11-11 B. L. Chen , H. L. Ge , C. Giunti , Q. Y. Liu