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Related papers: SNO and the solar neutrino problem

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We perform model independent and model dependent analyses of solar neutrino data including the neutral current event rate from SNO. The inclusion of the first SNO NC data in the model independent analysis determines the allowed ranges of…

High Energy Physics - Phenomenology · Physics 2014-11-17 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami , D. P. Roy

The global data on solar neutrino rates and spectrum, including the SNO charged current rate, can be explained by LMA, LOW or the energy independent solution -- corresponding to near-maximal mixing. All the three favour a mild upward…

High Energy Physics - Phenomenology · Physics 2009-11-07 Sandhya Choubey , Srubabati Goswami , D. P. Roy

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 investigate the implications of the SNO charged-current (CC) and electron scattering (ES) measurements of solar \br neutrino fluxes for neutrino mass and mixing parameters by performing a global and unified $\chi^2$ analysis of the solar…

High Energy Physics - Phenomenology · Physics 2009-11-07 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami , Kamales Kar

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…

High Energy Physics - Phenomenology · Physics 2009-11-07 P. I. Krastev , A. Yu. Smirnov

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 present "Before and After" global oscillation solutions, as well as predicted "Before and After" values and ranges for ten future solar neutrino observables (for BOREXINO, KamLAND, SNO, and a generic p-p neutrino detector). We have…

High Energy Physics - Phenomenology · Physics 2009-11-07 John N. Bahcall , M. C. Gonzalez-Garcia , Carlos Peña-Garay

We analyze the impact of recent solar, atmospheric and reactor data in the determination of the neutrino oscillation parameters, taking into account that both the solar nu_e and the atmospheric nu_mu may convert to a mixture of active and…

High Energy Physics - Phenomenology · Physics 2009-09-17 M. Maltoni , T. Schwetz , M. A. Tortola , J. W. F. Valle

We perform an oscillation parameter-independent analysis of solar neutrino flux measurements from which we predict the charged-current rate at SNO relative to Standard Solar Model to be $R_{SNO}^{CC}=0.35^{+0.16}_{-0.09}…

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

For active and sterile neutrinos, we present the globally allowed solutions for two neutrino oscillations. We include the SNO CC measurement and all other relevant solar neutrino and reactor data. Five active neutrino oscillation solutions…

High Energy Physics - Phenomenology · Physics 2010-05-28 John N. Bahcall , M. C. Gonzalez-Garcia , Carlos Pena-Garay

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

We present a global analysis of all the available solar neutrino data treating consistently the 8B and hep neutrino fluxes as free parameters. The analysis reveals at 99.7% C.L. eight currently-allowed discrete regions in two-neutrino…

High Energy Physics - Phenomenology · Physics 2010-02-03 John N. Bahcall , Plamen I. Krastev , Alexei 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

We study neutrino oscillations and the level-crossing probability PLZ in power-law potential profiles A(r)\propto r^n. We give local and global adiabaticity conditions valid for all mixing angles theta and discuss different representations…

High Energy Physics - Phenomenology · Physics 2009-09-25 M. Kachelriess , A. Strumia , R. Tomas , J. W. F. Valle

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

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 analyze the cumulative data from the latest SNO, KamLAND and other solar neutrino experiments in the standard scenario of three oscillating active neutrinos. We determine the solar neutrino oscillation parameters and obtain new bounds on…

High Energy Physics - Phenomenology · Physics 2009-09-15 A. B. Balantekin , V. Barger , D. Marfatia , S. Pakvasa , H. Yuksel

We investigate how the anticipated neutral current rate from $SNO$ will sharpen our understanding of the solar neutrino anomaly. Quantitative analyses are performed with representative values of this rate in the expected range of $0.8 -…

High Energy Physics - Phenomenology · Physics 2009-11-07 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami , D. P. Roy

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

The flatness of the SuperKamiokande neutrino electron scattering spectrum and the apparent downturn of the charged current spectrum in the SNO data which the Large Mixing Angle solution (LMA) to the solar neutrino problem fails to predict…

High Energy Physics - Phenomenology · Physics 2013-10-02 Joao Pulido , C. R. Das
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