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相关论文: Before and After: How has the SNO NC measurement c…

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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…

高能物理 - 唯象学 · 物理学 2008-11-26 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami

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…

高能物理 - 唯象学 · 物理学 2009-09-15 A. B. Balantekin , V. Barger , D. Marfatia , S. Pakvasa , H. Yuksel

We present an updated global analysis of two-flavor MSW solutions to the solar neutrino problem in terms of conversions of nu_e into active or sterile neutrinos. We perform a fit to the full data set corresponding to the 825-day…

高能物理 - 唯象学 · 物理学 2009-09-17 M. C. Gonzalez-Garcia , P. C. de Holanda , C. Peña-Garay , J. W. F. Valle

We perform a comparative study of two methods of determining the survival probabilities of low, intermediate, and high energy solar neutrinos that emphasizes the general agreement between the Large Mixing Angle (LMA) solution and extant…

高能物理 - 唯象学 · 物理学 2009-09-15 V. Barger , D. Marfatia , K. Whisnant

We update our earlier study in [1], which was inspired by the 2002 SNO data, on the implications of the results of the solar neutrino experiments for the predictions of the effective Majorana mass in neutrinoless double beta-decay, |<m>|.…

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

We consider the impact of the recent KamLAND data on neutrino oscillations, the first terrestrial neutrino experiment that can probe the solar neutrino anomaly. By combining the first 145.1 days of KamLAND data with the full sample of…

高能物理 - 唯象学 · 物理学 2009-09-17 M. Maltoni , T. Schwetz , J. W. F. Valle

We examine the solar neutrino problem in the context of the realistic three neutrino mixing scenario including the SNO charged current (CC) rate. The two independent mass squared differences $\Delta m^2_{21}$ and $\Delta m^2_{31} \approx…

高能物理 - 唯象学 · 物理学 2009-11-07 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami , Kamales Kar

We discuss the potential of SNO to constraint the four-neutrino mixing schemes favoured by the results of all neutrino oscillations experiments. These schemes allow simultaneous transitions of solar $\nu_e's$ into active $\nu_\mu$'s,…

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

We find that vacuum oscillations (VO), large-mixing-angle and small-mixing-angle MSW solutions to the solar neutrino problem (SNP) give all very good fits to the most recent results. Measurements of the $^7$Be flux can, in some cases,…

高能物理 - 唯象学 · 物理学 2011-01-04 E. Calabresu , N. Ferrari , G. Fiorentini , M. Lissia

In the context of three-neutrino oscillations, we study the possibility of using antineutrinos from nuclear reactors to explore the 10^{-4} {\rm eV^2} < \ms \ltap 8\times 10^{-4} {\rm eV^2} region of the LMA MSW solution of the solar…

高能物理 - 唯象学 · 物理学 2009-11-07 S. T. Petcov , M. Piai

Continuing previous work, a model independent analysis of the solar neutrino anomaly is performed in terms of neutrino oscillations, allowing a comparison with the predictions of the Standard Solar Model. SMA and LMA solutions emerge also…

高能物理 - 唯象学 · 物理学 2009-10-31 Riccardo Barbieri , Alessandro Strumia

Solar neutrino oscillations are supported by KamLAND's antineutrino measurements, but certain solar neutrino data - the observed shape of the ${}^8$B flux and the difference between day and night counting rates measured in Super-Kamiokande…

高能物理 - 唯象学 · 物理学 2018-01-01 Francesco Vissani

Allowing for antineutrinos ($\bar\nu_x$) and sterile neutrinos ($\nu_s$) to accompany LMA oscillations, we derive in a model independent way, upper bounds on their components in the solar flux, using the recent data from SNO and…

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

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…

高能物理 - 唯象学 · 物理学 2010-04-05 Abhijit Bandyopadhyay , Sandhya Choubey , Srubabati Goswami , S. T. Petcov , D. P. Roy

A seismic model for the Sun calculated using the accurate helioseismic data predicts a lower $^{8}{B}$ neutrino flux as compared to the standard solar model (SSM). However, there persists a discrepancy between the predicted and measured…

高能物理 - 唯象学 · 物理学 2009-11-07 Sandhya Choubey , Srubabati Goswami , Kamales Kar , H. M. Antia , S. M. Chitre

We review neutrino oscillation physics, including the determination of mass splittings and mixings from current solar, atmospheric, reactor and accelerator neutrino data. A brief discussion is given of cosmological and astrophysical…

高能物理 - 唯象学 · 物理学 2009-09-17 S. Pakvasa , J. W. F. Valle

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…

高能物理 - 唯象学 · 物理学 2009-11-07 C. V. K. Baba , D. Indumathi , M. V. N. Murthy

Vacuum oscillations are considered for the combined solar neutrino observations, including the Kamiokande II spectrum data and incorporating theoretical uncertainties and their correlations. Despite the conceptual difficulty of the fine…

高能物理 - 唯象学 · 物理学 2007-05-23 Naoya Hata

Time variability of the solar neutrino flux especially in the low and intermediate energy sector remains an open question and, if it exists, it is likely to be originated from the magnetic moment transition from active to light sterile…

高能物理 - 唯象学 · 物理学 2008-11-26 Marco Picariello , João Pulido , S. Andringa , N. F. Barros , J. Maneira

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}…

高能物理 - 唯象学 · 物理学 2009-09-15 V. Barger , D. Marfatia , K. Whisnant