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相关论文: Recent Results from KamLAND

200 篇论文

In the framework of quantum open systems we analyze data from KamLAND by using a model that considers neutrino oscillation in a three-family approximation with the inclusion of the decoherence effect. Using a $\chi^2$ test we find new…

高能物理 - 唯象学 · 物理学 2017-06-28 G. Balieiro Gomes , M. M. Guzzo , P. C. de Holanda , R. L. N. Oliveira

The RENO experiment recently reported the disappearance of reactor electron antineutrinos consistent with neutrino oscillations, with a significance of 4.9 standard deviations. The published ratio of observed to expected number of…

We review the potential of long and intermediate baseline reactor neutrino experiments in measuring the mass and mixing parameters. The KamLAND experiment can measure the solar mass squared difference very precisely. However it is not at…

高能物理 - 唯象学 · 物理学 2009-11-10 Sandhya Choubey

The neutrino oscillation experiment KamLAND has given the first evidence for disappearance of $\bar \nu_e$ coming from nuclear reactors. We have combined their data with all the solar neutrino data assuming two flavor neutrino mixing and…

高能物理 - 唯象学 · 物理学 2009-11-07 H. Nunokawa , W. J. C. Teves , R. Zukanovich Funchal

We present the first result of the KamLAND-Zen experiment, measurement of 136-Xe double-beta decay. In an exposure of 77.6 days with 129 kg of 136-Xe, two-neutrino double-beta decay half-life is measured precisely to be T_{1/2}^{2\nu} =…

高能物理 - 实验 · 物理学 2019-08-14 A. Gando

The electron antineutrino spectrum in the Stereo reactor experiment (ILL Grenoble) is measured via the inverse beta decay signals in an organic liquid scintillator. The six target cells of the Stereo detector are filled with about 1800…

仪器与探测器 · 物理学 2019-01-30 Christian Buck , Benjamin Gramlich , Manfred Lindner , Christian Roca , Stefan Schoppmann

The analysis of experiments at nuclear reactors where inverse beta decay reaction positron spectrum was measured at different distances from reactor core is presented here. It was found that there appear three enclosed zones of neutrino…

高能物理 - 实验 · 物理学 2013-04-19 V. V. Sinev

The $^{144}$Ce -- $^{144}$Pr electron antineutrino source is one of the most suitable radiochemical sources for experiments searching for the oscillations of active neutrinos to the light sterile state. In the current work the…

The first generation of solar neutrino experiments narrowed the allowed flavor mixing and mass parameter solutions (for nu_e <-> nu_x) to a few isolated regions of sin^2*2*theta - delta M^2 parameter space. Recently, the Small Mixing Angle…

高能物理 - 实验 · 物理学 2007-05-23 S. A. Dazeley

We study in detail the power of the reactor experiment kamLAND for discriminating existing solutions to the SNP and giving accurate information on neutrino masses and mixing angles. Assuming the expected signal corresponding to various…

高能物理 - 唯象学 · 物理学 2008-11-26 P. Aliani , V. Antonelli , M. Picariello , E. Torrente-Lujan

We present a review of the antineutrino spectra emitted from reactors. Knowledge of these and their associated uncertainties are crucial for neutrino oscillation studies. The spectra used to-date have been determined by either conversion of…

高能物理 - 唯象学 · 物理学 2016-11-23 A. C. Hayes , Petr Vogel

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…

高能物理 - 唯象学 · 物理学 2009-11-10 Bhag C. Chauhan , Joao Pulido , E. Torrente-Lujan

We reexamine the possibility of a time modulation of the low energy solar neutrino flux which is suggested by the average decrease of the Ga data in line with our previous arguments. We perform two separate fits to the solar neutrino data,…

高能物理 - 唯象学 · 物理学 2008-11-26 Bhag C. Chauhan , Joao Pulido , Marco Picariello

The IsoDAR antineutrino source, which produces a flux from 8Li isotope decay at rest, when paired with the proposed JUNO (Jiangmen Underground Neutrino Observatory) detector, has unprecedented sensitivity to anti-nu_e disappearance for…

高能物理 - 实验 · 物理学 2014-03-19 J. M. Conrad , M. H. Shaevitz

We present a neutrino oscillation analysis of two particular data sets from the Daya Bay and RENO reactor neutrino experiments aiming to study the increase in precision in the oscillation parameters $\sin^2{2\theta}_{13}$ and the effective…

高能物理 - 唯象学 · 物理学 2020-02-03 Mario A. Acero , Alexis A. Aguilar-Arevalo , Dairo J. Polo-Toledo

A search for muon anti-neutrino to electron anti-neutrino oscillations was conducted by the Liquid Scintillator Neutrino Detector at the Los Alamos Neutron Science Center using muon anti-neutrinos from positive muon decay at rest. A total…

RENO (Reactor Experiment for Neutrino Oscillation) is an experiment dedicated to measure the smallest neutrino mixing angle {\theta}_13 using reactor neutrinos in Korea. Our first result measured in 2012 using about 220 live days of data…

仪器与探测器 · 物理学 2013-12-18 Seon-Hee Seo

This presentation describes a measurement of the neutrino mixing parameter, sin^2(2theta_13), from the Daya Bay Reactor Neutrino Experiment. Disappearance of electron antineutrinos at a distance of ~2 km from a set of six reactors, where…

高能物理 - 实验 · 物理学 2019-08-14 Elizabeth Worcester

The double beta decay experiment NEMO~3 has been taking data since February 2003. The aim of this experiment is to search for neutrinoless decay and investigate two neutrino double beta decay in seven different enriched isotopes…

核实验 · 物理学 2009-07-24 A. S. Barabash

In this letter the robustness of the first results from the KamLAND reactor neutrino experiment with respect to variations in the statistical analysis is considered. It is shown that an event-by-event based likelhood analysis provides a…

高能物理 - 唯象学 · 物理学 2008-11-26 Thomas Schwetz