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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

We present an updated analysis of all the data available about solar neutrinos, including the charged current SNO results. The best fit of the data is obtained in the Large Mixing Angle region, but different solutions are still possible. We…

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

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

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

The Sudbury Neutrino Observatory (SNO) has measured day and night solar neutrino energy spectra and rates. For charged current events, assuming an undistorted $^8$B spectrum, the night minus day rate is $14.0% \pm 6.3% ^{+1.5}_{-1.4}%$ of…

Nuclear Experiment · Physics 2012-08-27 SNO Collaboration

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 results of all currently operating solar neutrino experiments are analyzed in the framework of the resonant neutrino spin--flavor precession scenario including the effects of neutrino mixing. Nine different profiles of the solar…

High Energy Physics - Phenomenology · Physics 2009-09-25 E. Kh. Akhmedov , A. Lanza , S. T. Petcov

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 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 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 possibility that the Gallium data effectively indicates a time modulation of the solar active neutrino flux in possible connection to solar activity is examined on the light of spin flavour precession to sterile neutrinos as a…

High Energy Physics - Phenomenology · Physics 2009-11-11 Bhag C. Chauhan , Joao Pulido , R. S. Raghavan

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 consider the implications of the recent results of SAGE and GALLEX experiments for the solution of the solar neutrino problem in the framework of the resonant neutrino spin-flavor precession scenario. It is shown that this scenario is…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Kh. Akhmedov , A. Lanza , S. T. Petcov

Assuming that the solar neutrino deficit observed in the Homestake, SAGE, Gallex, Kamiokande and Super-Kamiokande experiments is due to the interaction of the neutrino transition magnetic moment with the solar magnetic field, we calculate…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Kh. Akhmedov , J. Pulido

This paper reviews the constraints imposed on the solar neutrino mixing parameters by data collected by the Sudbury Neutrino Observatory (SNO). The SNO multivariate analysis is reviewed. The global solar neutrino analysis is emphasized in…

High Energy Physics - Experiment · Physics 2014-11-17 Alain Bellerive

Assuming the current best-fit solutions to the solar neutrino problem at large mixing angle, we briefly illustrate how prospective data from the Sudbury Neutrino Observatory (SNO) and from the Kamioka Liquid scintillator Anti-Neutrino…

High Energy Physics - Phenomenology · Physics 2016-09-06 G. L. Fogli , E. Lisi , A. Palazzo , A. M. Rotunno

The motivations for the magnetic moment solution to the solar neutrino problem are briefly reviewed and the expected values for a number of observables to be measured by the SNO experiment are calculated assuming three different solar…

High Energy Physics - Phenomenology · Physics 2009-10-31 Joao Pulido

We briefly discuss some implications of the first solar \nu results from the Sudbury Neutrino Observatory (SNO) experiment in the charged-current channel. We first show that the present SNO response function is very similar to the…

High Energy Physics - Phenomenology · Physics 2009-10-07 G. L. Fogli , E. Lisi , D. Montanino , A. Palazzo

(Abridged.) We present a thorough analysis of the current solar neutrino data, in the context of two-flavor active neutrino oscillations. We aim at performing an accurate and exhaustive statistical treatment of both the input and the output…

High Energy Physics - Phenomenology · Physics 2009-10-07 G. L. Fogli , E. Lisi , A. Marrone , D. Montanino , A. Palazzo

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
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