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We explore whether KamLAND and solar data may end up inconsistent when analyzed in terms of two-flavor neutrino oscillations. If this turned out to be the case, one would be led to conclude that there is more new physics, besides neutrino…

High Energy Physics - Phenomenology · Physics 2008-11-26 Andre de Gouvea , Carlos Pena-Garay

We have analysed the recent results from the observation of charged current \nu_e d \to e^- p p events from solar neutrinos by the Sudbury Neutrino Observatory SNO assuming neutrino oscillations with three active flavours. The data seem to…

High Energy Physics - Phenomenology · Physics 2009-11-07 C. V. K. Baba , D. Indumathi , M. V. N. Murthy

We study the impact of neutrino oscillations on the interpretation of the supernova (SN) 1987A neutrino signal by means of a maximum-likelihood analysis. We focus on oscillations between $\overline\nu_e$ with $\overline\nu_\mu$ or…

Astrophysics · Physics 2014-10-13 B. Jegerlehner , F. Neubig , G. Raffelt

The current Super-Kamiokande data on the D-N asymmetry between the the day event rate and the {\it Night} and {\it Core} event rates, produced by solar neutrinos which respectively cross the Earth along any trajectory and cross the Earth…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Maris , S. T. Petcov

We present the results of a Bayesian analysis of solar neutrino data in terms of nu_e->nu_{mu,tau} oscillations, independent from the Standard Solar Model predictions for the solar neutrino fluxes. We show that such a model independent…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. V. Garzelli , C. Giunti

We present an analysis of the MSW neutrino oscillation solutions of the solar neutrino problem in the framework of two-neutrino mixing in the enlarged parameter space $(\Delta m^2, \tan^2\theta)$ with $\theta \in (0,\frac{\pi}{2})$.…

High Energy Physics - Phenomenology · Physics 2009-12-30 M. C. Gonzalez-Garcia , C. Peña-Garay

We study the possible manifestation of the interference between the effects produced in the atmospheric neutrinos due to oscillation driven by the solar parameters parameters $\Delta m^2_{21}$, $\sin^2 2\theta_{21}$ and due to oscillation…

High Energy Physics - Phenomenology · Physics 2015-06-25 O. L. G. Peres , A. Yu. Smirnov

We present a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture, including new data which appeared since our previous analysis~\cite{Forero:2014bxa}. In this update we include new long-baseline…

High Energy Physics - Phenomenology · Physics 2018-06-20 P. F. de Salas , D. V. Forero , C. A. Ternes , M. Tortola , J. W. F. Valle

The L/E-flatness of the e-like events observed in the recent atmospheric-neutrino data from Super-Kamiokande (SuperK) is interpreted to reflect a new symmetry of the neutrino-oscillation mixing matrix. From that we obtain an analytical set…

High Energy Physics - Phenomenology · Physics 2016-09-06 D. V. Ahluwalia

The SNO+ Collaboration reports new results on reactor antineutrino oscillations using data acquired from May 2022 through July 2025. The spectral analysis of a flux dominated by nuclear reactors at 240, 350, and 355 kilometers yields the…

This paper reviews the constraints on the solar neutrino mixing parameters with data collected by the Homestake, SAGE, GALLEX, Kamiokande, SuperKamiokande, Borexino and SNO experiments. An emphasis will be given to the global solar neutrino…

High Energy Physics - Experiment · Physics 2010-12-14 Alain Bellerive

I summarize here the results of a global fit to the full data set corresponding to 33.0 kt-yr of data of the Super-Kamiokande experiment as well as to all other experiments in order to compare the active-active and active-sterile neutrinos…

High Energy Physics - Phenomenology · Physics 2009-10-31 O. L. G. Peres

We present an analysis of the global neutrino oscillation data in terms of four-neutrino mass schemes. We find that the strong preference of oscillations into active neutrinos implied by solar+KamLAND as well as atmospheric neutrino data…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Maltoni , T. Schwetz , M. A. Tortola , J. W. F. Valle

We present the latest results on the study of atmospheric neutrino oscillations with the MACRO detector at Gran Sasso. Two sub-samples of events have been analysed, both in terms of absolute flux and zenith angle distribution: high energy…

High Energy Physics - Experiment · Physics 2015-06-25 M. Sioli

We generalize the pull approach to define the $\chi^2$ function to the analysis of the data with correlated statistical errors. We apply this method to the analysis of the Sudbury Neutrino Collaboration data obtained in the salt-phase. In…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. B. Balantekin , H. Yuksel

We investigate the potential of 3 kiloTon-years(kTy) of KamLAND data to further constrain the $\Delta m^2$ and $\tan^2\theta$ values compared to those presently allowed by existing KamLAND and global solar data. We study the extent,…

High Energy Physics - Phenomenology · Physics 2008-11-26 Abhijit Bandyopadhyay , Sandhya Choubey , Raj Gandhi , Srubabati Goswami , D. P. Roy

Solar and atmospheric neutrino data require physics beyond the Standard Model of particle physics. The simplest, most generic, but not yet unique, interpretation of the data is in terms of neutrino oscillations. I summarize the results of…

Astrophysics · Physics 2007-05-23 J. W. F. Valle

We perform a detailed study of the Earth matter effects on supernova neutrinos. The dependences of these effects on the properties of the original neutrino fluxes, on the trajectory of the neutrinos inside the Earth and on the oscillation…

High Energy Physics - Phenomenology · Physics 2016-09-06 C. Lunardini , A. Yu. Smirnov

I summarize the present status of global analyses of neutrino oscillations, including the most recent KamLAND and K2K data, as well as the latest solar and atmospheric neutrino fluxes. I give the allowed ranges of the three--flavour…

High Energy Physics - Phenomenology · Physics 2009-09-17 J. W. F. Valle

We present an analysis of the global neutrino oscillation data including the LSND result in terms of four-neutrino mass schemes and a CPT violating three-neutrino framework. We find that the strong preference of oscillations into active…

High Energy Physics - Phenomenology · Physics 2007-05-23 Thomas Schwetz