2002/11/18 by M. Kaneyama, Masahiro Kaneyama, Kaneyama, Masahiro +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Solar and Space Plasma Dynamics #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0211273
5pages, 3figures
arxiv created 2002/11/18 · openalex publication_date 2002/11/18 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using an exact solution with the hyperbolic-tangent profile for the electron density in the sun, which is developed by Nötzold and later modified by Nakagawa, we have analyzed the solar neutrino problem. An interference term in their approach is correctly taken into account. Combining the hyperbolic-tangent profile with the BP2000, we obtain a phenomenological fitting in the analytic form. Combining recent observed results for survival probability P(νe → νe) by the SNO, SK, SAGE, Gallex, GNO and Homestake Collaborations, we obtain a large mixing angle (LMA) whose figure is looking like a shoulder.