2003/04/30 by B. C. Chauhan, Bhag C. Chauhan, João Pulido +3 · 3 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Coronal mass ejection #Electron #Field (mathematics) #Flux (metallurgy) #Geometry #Magnetic field #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Scaling #Solar core #Solar maximum #Solar neutrino #Solar wind #hep-ph
paper · pdf · doi:10.1103/physrevd.68.033015
published as Phys.Rev. D68 (2003) 033015 · 15 pages. References corrected. Minor changes in the text
arxiv created 2003/05/05 · openalex publication_date 2003/08/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this work the possibility of detecting solar electron antineutrinos produced by a solar core magnetic field from the KamLAND recent observations is investigated. We find a scaling of the antineutrino probability with respect to the magnetic field profile in the sense that the same probability function can be reproduced by any profile with a suitable peak field value. In this way the solar electron antineutrino spectrum can be unambiguously predicted. We use this scaling and the negative results indicated by the KamLAND experiment to obtain upper bounds on the solar electron antineutrino flux. We get \ensuremathφ_\ensuremathν<3.8\ifmmode×\else\texttimes\fi10^\ensuremath-3\ensuremathφ(8B) at 95% C.L. For 90% C.L. this becomes \ensuremathφ_\ensuremathν<3.4\ifmmode×\else\texttimes\fi10^\ensuremath-3\ensuremathφ(8B), an improvement by a factor of 3--5 with respect to existing bounds. These limits are independent of the detailed structure of the magnetic field in the solar interior. We also derive upper bounds on the peak field value which are uniquely determined for a fixed solar field profile. In the most efficient antineutrino producing case, we get (95% C.L.) an upper limit on the product of the neutrino magnetic moment by the solar field \ensuremathμB<2.8\ifmmode×\else\texttimes\fi10^\ensuremath-19MeV or B0<~4.9\ifmmode×\else\texttimes\fi107G for \ensuremathμ_\ensuremathν=10^\ensuremath-12\ensuremathμB.