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The excess of solar-neutrino events above 13 MeV that has been recently observed by Superkamiokande can be explained by the vacuum oscillation solution to the Solar Neutrino Problem (SNP). If the boron neutrino flux is 20% smaller than the…

高能物理 - 唯象学 · 物理学 2011-01-04 V. Berezinsky , G. Fiorentini , M. Lissia

The Solar Neutrino Problems (SNP's) are analysed within the Standard Solar Model (BP2000) supplemented by the reduction of the solar neutrino fluxes through the decrease of the solar core temperature. The former can be realized through the…

天体物理学 · 物理学 2007-05-23 A. N. Ivanov , H. Oberhummer , N. I. Troitskaya

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…

高能物理 - 唯象学 · 物理学 2009-08-18 E. Gates , L. M. Krauss , M. White

The neutrino long wavelength (just-so) oscillation is revisited as a solution to the solar neutrino problem. We consider just-so scenario in various cases: in the framework of the solar models with relaxed prediction of the boron neutrino…

高能物理 - 唯象学 · 物理学 2008-11-26 Z. Berezhiani , A. Rossi

We discuss a simple predictive solution to the solar neutrino problem based on maximal vacuum neutrino oscillations. The solution can be motivated by the exact parity symmetric model which predicts that the neutrino mass eigenstates are…

高能物理 - 唯象学 · 物理学 2007-05-23 R. Foot , R. R. Volkas

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…

高能物理 - 唯象学 · 物理学 2007-05-23 P. Aliani , V. Antonelli , R. Ferrari , M. Picariello , E. Torrente-Lujan

We explore the possibility of an energy independent suppression of the solar neutrino flux in the context of the recent SuperKamiokande data. From a global analysis of the rate and spectrum data, this scenario is allowed at only 14%…

高能物理 - 唯象学 · 物理学 2009-12-31 Sandhya Choubey , Srubabati Goswami , Nayantara Gupta , D. P. Roy

The current status of oscillation solutions to the Solar Neutrino Problem is reviewed. Four oscillation solutions are discussed in the light of 708d Superkamiokande data: MSW, Just-So VO, VO with Energy-Independent Suppression (EIS) and…

高能物理 - 唯象学 · 物理学 2011-08-17 V. Berezinsky

We study the stability of the two--neutrino vacuum oscillation solution of the solar neutrino problem with respect to changes of the total fluxes of boron and beryllium neutrinos. For any value of $\Phi_{{\rm Be}}$ from the interval…

高能物理 - 唯象学 · 物理学 2008-11-26 P. I. Krastev , S. T. Petcov

We perform a global analysis of the latest solar neutrino data including the SNO result on the CC-event rate. This result further favors the LMA solution of the solar neutrino problem. The best fit values of parameters we find are: \Delta…

高能物理 - 唯象学 · 物理学 2009-11-07 P. I. Krastev , A. Yu. Smirnov

We re-analyse spin-flavour precession solutions to the solar neutrino problem in the light of the recent SNO CC result as well as the 1258--day Super-Kamiokande data and the upper limit on solar anti-neutrinos. In a self-consistent…

高能物理 - 唯象学 · 物理学 2009-09-17 O. G. Miranda , C. Pena-Garay , T. I. Rashba , V. B. Semikoz , J. W. F. Valle

The most promising solution to the solar neutrino problem are neutrino oscillations, which usually are analyzed within the reduced 2-flavor scheme, because the solutions found therein reasonably well reproduce the recent data of…

高能物理 - 唯象学 · 物理学 2007-05-23 Helmut Schlattl

We study the solar neutrino problem within the framework of a parametrized post-Newtonian formulation for the gravitational interaction of the neutrinos, which incorporates a violation to the equivalence principle (VEP). Using the current…

高能物理 - 唯象学 · 物理学 2009-10-31 H. Casini , J. C. D'Olivo , R. Montemayor

We perform an updated model-independent analysis using the latest solar neutrino data obtained by $^{37}$Cl and $^{71}$Ga radiochemical experiments, and most notably by a large water-Cherenkov detector SuperKamiokande with their 504 days of…

高能物理 - 唯象学 · 物理学 2009-10-31 Hisakazu Minakata , Hiroshi Nunokawa

We re-examine vacuum oscillation solutions of the solar neutrino problem taking (a) the results on total rates, electron energy spectrum, and the seasonal variations from the 708 day SuperKamiokande data and (b) those on total rates from…

高能物理 - 唯象学 · 物理学 2007-05-23 Srubabati Goswami , Debasish Majumdar , Amitava Raychaudhuri

There are large uncertainties in the predictions of the boron neutrino flux from the Sun which cannot be considered as being of purely statistical origin. We treat the magnitude of this flux, $\Phi_B$, as a parameter to be found from…

高能物理 - 唯象学 · 物理学 2009-09-25 P. I. Krastev , A. Yu. Smirnov

We re-examine the neutrino decay solution to the solar neutrino problem in the light of the SuperKamiokande (SK) data. For the decay solution the SK spectrum data by its own can provide a fit comparable to the fit obtained from the MSW…

高能物理 - 唯象学 · 物理学 2016-09-06 Sandhya Choubey , Srubabati Goswami , Debasish Majumdar

The excess of solar-neutrino events above 13 MeV that has been recently observed by Superkamiokande can be explained by vacuum oscillations (VO). If the boron neutrino flux is 20% smaller than the standard solar model (SSM) prediction and…

高能物理 - 唯象学 · 物理学 2007-05-23 V. Berezinsky , G. Fiorentini , M. Lissia

We present an analysis of the neutrino oscillation solutions of the solar neutrino problem in the framework of four-neutrino mixing where a sterile neutrino is added to the three standard ones. We perform a fit to the full data set…

高能物理 - 唯象学 · 物理学 2009-10-31 C. Giunti , M. C. Gonzalez-Garcia , C. Peña-Garay

The analysis of the resonant spin-flavour (RSF) solutions to the solar neutrino problem in the framework of simplest analytic solutions to the solar magneto-hydrodynamics (MHD) equations is presented. We performed the global fit of the…

高能物理 - 唯象学 · 物理学 2009-09-17 T. I. Rashba , O. G. Miranda , C. Penya-Garay , V. B. Semikoz , J. W. F. Valle
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