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The vacuum oscillation (VO) solution to the solar anomaly requires an extremely small neutrino mass splitting, Delta m^2_{sol}\leq 10^{-10} eV^2. We study under which circumstances this small splitting (whatever its origin) is or is not…

High Energy Physics - Phenomenology · Physics 2010-02-03 J. A. Casas , J. R. Espinosa , A. Ibarra , I. Navarro

Solar neutrino studies triggered and largely motivated the major developments in neutrino physics in the last 50 years. Theory of neutrino propagation in different media with matter and fields has been elaborated. It includes oscillations…

High Energy Physics - Phenomenology · Physics 2017-01-18 Michele Maltoni , Alexei Yu. Smirnov

SNO's neutral current measurement has added a new piece to the emerging neutrino physics puzzle. Putting together the presently available experimental information, an essentially unique picture emerges: The solar neutrino anomaly is…

High Energy Physics - Phenomenology · Physics 2009-11-07 R. Foot , R. R. Volkas

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…

High Energy Physics - Phenomenology · Physics 2009-10-31 Riccardo Barbieri , Alessandro Strumia

A method developed from the Dualized Standard Model for calculating the quark CKM matrix and masses is applied to the parallel problem in neutrino oscillations. Taking the parameters determined from quarks and the masses of two neutrinos:…

High Energy Physics - Phenomenology · Physics 2010-11-23 J Bordes , HM Chan , J. Pfaudler , ST Tsou

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

A new concept is proposed to solve the solar neutrino problem, that is based on a hypothesis about the existence of a new interaction of electron neutrinos with nucleons mediated by massless pseudoscalar bosons. At every collision of a…

High Energy Physics - Phenomenology · Physics 2019-12-24 L. M. Slad

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…

Astrophysics · Physics 2007-05-23 A. N. Ivanov , H. Oberhummer , N. I. Troitskaya

The simplest unified extension of the MSSM with bi-linear R--Parity violation naturally predicts a hierarchical neutrino mass spectrum, in which one neutrino acquires mass by mixing with neutralinos, while the other two get mass…

High Energy Physics - Phenomenology · Physics 2014-11-17 M. Hirsch , M. A. Diaz , W. Porod , J. C. Romao , J. W. F. Valle

In this talk, I review, from the phenomenological point of view, solutions to the solar neutrino problem, which are not provided by the conventional neutrino oscillation induced by mass and flavor mixing, and show that they can provide a…

High Energy Physics - Phenomenology · Physics 2017-08-23 H. Nunokawa

The Lehmann-Newton-Wu mass matrix, which was recently applied to neutrinos, is further investigated. The analytic results presented earlier are confirmed numerically for the solar density profile of the Standard Solar Model. The combined…

High Energy Physics - Phenomenology · Physics 2009-10-31 Per Osland , Geir Vigdel

In a Dynamic Solar Model (DSM) the temperature dependences of the pp cycle neutrinos will be different from the ones determined by solar model calculations with the luminosity constraint. Instead of the usual neutrino fluxes pp ~ T^{-1/2},…

Astrophysics · Physics 2007-05-23 Attila Grandpierre

After a short survey of the physics of solar neutrinos, giving an overview of hydrogen burning reactions, predictions of standard solar models and results of solar neutrino experiments, we discuss the solar-model-independent indications in…

Astrophysics · Physics 2011-01-04 V. Castellani , S. Degl'Innocenti , G. Fiorentini , M. Lissia , B. Ricci

The atmospheric neutrino oscillations and the vacuum oscillation solution of the solar neutrino problem can be consistently described by a doubly or triply degenerate neutrino spectrum as long as the high level of degeneracy required is not…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. Barbieri , G. Ross , A. Strumia

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…

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

Solar neutrino physics is an exciting and difficult field of research for physicists, where astrophysics, elementary particle and nuclear physics meet. \ The Sun produces the energy that life has been using on Earth for many years, about…

High Energy Physics - Experiment · Physics 2011-02-07 Lino Miramonti , Franco Reseghetti

The standard solar model (SSM) yield a $^8$B solar neutrino flux which is consistent within the theoretical and experimental uncertainties with that observed at Super-Kamiokande. The combined results from the Super- Kamiokande and the…

Astrophysics · Physics 2011-04-15 Arnon Dar

An improved standard solar model has been used to calculate the fluxes of standard solar neutrinos. It includes premain sequence evolution, element diffusion, partial ionization effects, and all the possible nuclear reactions between the…

Astrophysics · Physics 2009-10-28 Arnon Dar , Giora Shaviv

The Standard Model (SM) of particle physics, comprised of the unified electro-weak (EW) and Quantum Chromodynamic (QCD) theories, accurately explains almost all experimental results related to the micro-world, and has made a number of…

High Energy Physics - Phenomenology · Physics 2021-03-01 Shenjian Chen , Stephen Lars Olsen

The sun and core-collapse supernovae produce neutrino spectra that are sensitive to the effects of masses and mixing. Current results from solar neutrino experiments provide perhaps our best evidence for such new neutrino physics, beyond…

Nuclear Theory · Physics 2007-05-23 Wick Haxton