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Related papers: Gallium data variability and KamLAND

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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

A global analysis of the solar neutrino data from all solar neutrino experiments combined with the KamLAND data is presented assuming that the solar neutrino deficit is due to the matter-enhanced spin-flavor precession effect. The allowed…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Yilmaz , A. U. Yilmazer

We reanalyze the non-standard interaction (NSI) solutions to the solar neutrino problem in the light of the latest solar, atmospheric and reactor neutrino data. We show that such solutions, although preferred by the solar data and…

High Energy Physics - Phenomenology · Physics 2009-09-17 M. M. Guzzo , P. C. de Holanda , M. Maltoni , H. Nunokawa , M. A. Tortola , J. W. F. Valle

An updated analysis of all available neutrino oscillation evidence in Reactor (Kamland, first 145 days of data) and Solar experiments (SK day and night spectra, global rates from Homestake, SAGE and GALLEX) including the $SNO CC$ and $NC$…

High Energy Physics - Phenomenology · Physics 2016-09-06 P. Aliani , V. Antonelli , M. Picariello , E. Torrente-Lujan

Open questions remain after the confirmation of LMA as the dominant solution to the solar neutrino deficit. These are the apparent time modulation of the solar neutrino event rates in the Homestake, Gallium and SuperKamiokande experiments,…

High Energy Physics - Phenomenology · Physics 2010-02-03 Bhag C. Chauhan , Joao Pulido

The complete and concurrent Homestake and Kamiokande solar neutrino data sets (including backgrounds), when compared to detailed model predictions, provide no unambiguous indication of the solution to the solar neutrino problem. All…

High Energy Physics - Phenomenology · Physics 2009-08-18 E. Gates , L. M. Krauss , M. White

The first KamLAND results are in a very good agreement with the predictions made on the basis of the solar neutrino data and the LMA realization of the MSW mechanism. We perform a combined analysis of the KamLAND (rate, spectrum) and the…

High Energy Physics - Phenomenology · Physics 2009-11-07 P. C. de Holanda , A. Yu. Smirnov

The low energy component of the antineutrino spectrum observed in the recent Kamland experiment has significant contribution from the radioactive decay of $^{238}U$ and $^{232}Th$ in the crust and mantle of the earth. By taking the ratio of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Subhendra Mohanty

Large Mixing Angle (LMA) neutrino oscillation is the main solution for the long-standing Solar Neutrino Problem (SNP). Whether there is any subdominant effect accompanying the dominant LMA solution can not be ruled out at the moment, but…

High Energy Physics - Phenomenology · Physics 2009-11-11 Bhag C. Chauhan

We comment on the first indication of geo-neutrino events from KamLAND and on the prospects for understanding Earth energetics. Practically all models of terrestrial heat production are consistent with data within the presently limited…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Fiorentini , T. Lasserre , M. Lissia , B. Ricci , S. Schonert

In this work the possibility of detecting solar electron antineutrinos produced by a solar core magnetic field from the KamLAND recent observations is investigated. We find a scaling of the antineutrino probability with respect to the…

High Energy Physics - Phenomenology · Physics 2009-11-10 Bhag C. Chauhan , Joao Pulido , E. Torrente-Lujan

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

It has been known for some time that the well established LMA solution to the observed solar neutrino deficit fails to predict a flat energy spectrum for SuperKamiokande as opposed to what the data indicates. It also leads to a Chlorine…

High Energy Physics - Phenomenology · Physics 2011-08-31 C. R. Das , Joao Pulido

However the allowed range of $\theta_{\odot}$ ($\theta_{12}$) did not change much with the inclusion of the KamLAND results. In this paper we probe if future data from KamLAND can increase the accuracy of the allowed range in…

High Energy Physics - Phenomenology · Physics 2009-11-10 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami

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 use the recent KamLAND observations to predict the solar antineutrino spectrum at some confidence limits. We find that a scaling of the antineutrino probability with respect to the magnetic field profile --in the sense that the same…

High Energy Physics - Phenomenology · Physics 2014-11-17 Bhag C. Chauhan , Joao Pulido , E. Torrente-Lujan

We give an alternative description of the data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's core. Analyzing the uncertainty of…

One long-standing tension in the determination of neutrino parameters is the mismatched value of the solar mass square difference, $\Delta m_{21}^2$, measured by different experiments: the reactor antineutrino experiment KamLAND finds a…

High Energy Physics - Phenomenology · Physics 2024-05-31 Rasmi Hajjar , Sergio Palomares-Ruiz , Olga Mena

The main goal of the KamLAND reactor electron anti-neutrino experiment is a search for electron anti-neutrino oscillation using inverse-beta decay reaction in 1,000 ton of ultra-pure liquid scintillator. The data-set is 1490.8 days from…

High Energy Physics - Experiment · Physics 2019-08-13 Koichi Ichimura

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