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Related papers: Solving Solar Neutrino Puzzle via LMA MSW Conversi…

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We investigate the status of the neutrino decay solution to the solar neutrino problem in the context of the recent results from Sudbury Neutrino Observatory (SNO). We present the results of global $\chi^2$-analysis for both two and three…

High Energy Physics - Phenomenology · Physics 2008-11-26 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami

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 perform a global analysis in the framework of two active neutrino oscillations of all solar neutrino data, including the recent SNO day and night spectra (comprised of the charged current (CC), elastic scattering (ES) and neutral current…

High Energy Physics - Phenomenology · Physics 2009-09-15 V. Barger , D. Marfatia , K. Whisnant , B. P. Wood

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

The LMA solution of the solar neutrino problem has been explored with the 1,000 ton liquid scinatillator detector, KamLAND. It utilizes nuclear power reactors distributing effectively 180km from the experimental site. Comparing observed…

High Energy Physics - Experiment · Physics 2017-08-23 K. Inoue

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…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. Aliani , V. Antonelli , M. Picariello , E. Torrente-Lujan

Electroweak radiative corrections can generate the neutrino (mass)$^2$ difference required for the large mixing angle solution (LMA) to the solar neutrino problem if two of the neutrinos are assumed degenerate at high energy. We test this…

High Energy Physics - Phenomenology · Physics 2009-11-10 Anjan S. Joshipura , Subhendra Mohanty

An updated analysis of all available neutrino oscillation evidence in Solar experiments (SK day and night spectra, global rates from Homestake, SAGE and GALLEX) including the latest SNO CC and NC data is presented. Assuming that the shape…

High Energy Physics - Phenomenology · Physics 2007-06-22 P. Aliani , V. Antonelli , M. Picariello , R. Ferrari , E. Torrente-Lujan

An updated analysis of all available neutrino oscillation evidence in Solar experiments including the latest SNO ES,CC and NC data (254d live time, NaCL enhanced efficiency) is presented. We obtain, for the fraction of active oscillating…

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

The physics implications of the just published salt phase data from the SNO experiment are examined. The effect of these data on the allowed ranges of the solar neutrino oscillation parameters, $\Delta_m^2_{21}$ and $\sin^2\theta_{12}$, are…

High Energy Physics - Phenomenology · Physics 2010-04-05 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami , S. T. Petcov , D. P. Roy

We review the status of the neutrino oscillation physics (as of June 2003), with a particular emphasis on the present knowledge of the neutrino mass-mixing parameters in a three generation approach. We consider first the nu_mu-->nu_tau…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. L. Fogli , E. Lisi , A. Marrone , D. Montanino , A. Palazzo , A. M. Rotunno

Possible mixing of the active and sterile neutrinos has been considered both in the single Delta m^2 approximation and in the case of more than one Delta m^2. We perform global fit of the available solar neutrino data with free boron…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. C. de Holanda , A. Yu. Smirnov

We discuss the status of the solutions of the solar neutrino problem in terms of oscillations of $\nu_e$ into active or sterile neutrinos. We present the results of a global fit to the full data set corresponding to the latest data…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. C. Gonzalez-Garcia , C. Peña-Garay

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…

High Energy Physics - Experiment · Physics 2007-05-23 S. A. Dazeley

The possibility of flavor transitions into sterile neutrinos (accompanying the dominant LMA transitions) in the solar boron neutrino flux has been examined in a scenario proposed by Hollanda and Smirnov to overcome some generic problems of…

High Energy Physics - Phenomenology · Physics 2009-11-11 S. Dev , Sanjeev Kumar

Constraints on the core temperature (T_c) of the Sun and on neutrino- oscillation parameters are obtained from the existing solar neutrino data, including the recent GALLEX and Kamiokande III results. (1) A purely astrophysical solution to…

High Energy Physics - Phenomenology · Physics 2009-04-13 S. A. Bludman , N. Hata , D. C. Kennedy , P. G. Langacker

We explore the impact of the data from the KamLAND experiment in constraining neutrino mass and mixing angles involved in solar neutrino oscillations. In particular we discuss the precision with which we can determine the the mass squared…

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

We present an updated analysis of all available solar and reactor neutrino data, emphasizing in particular the totality of the KamLAND results and including the SNO phase III spectrum data. In a two active-neutrino framework, we determine…

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

We perform global analysis of the solar neutrino data including the day and night spectra of events at SNO. In the context of two active neutrino mixing, the best fit of the data is provided by the LMA MSW solution with Delta m^2 = 6.15…

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

We study the implication of the first neutral current (NC) data from SNO. We perform model independent and model dependent analyses of the solar neutrino data. The inclusion of the first SNO NC data in the model independent analysis…

High Energy Physics - Phenomenology · Physics 2007-05-23 Sandhya Choubey , Abhijit Bandyopadhyay , Srubabati Goswami , D. P. Roy