Matter effects in active–sterile solar neutrino oscillations

✍ Scribed by Carlo Giunti; Yu-Feng Li

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 249 KB
• Volume: 64
• Category: Article
• ISSN: 0146-6410
• DOI: 10.1016/j.ppnp.2009.12.013

✦ Synopsis

We study the matter effects for solar neutrino oscillations in a general scheme, without any constraint on the number of sterile neutrinos and the mixing matrix elements, only assuming a realistic hierarchy of neutrino squared-mass differences in which the smallest squared-mass difference is effective in solar neutrino oscillations. The validity of the analytic results is illustrated with a numerical solution of the evolution equation in the simplest case of four-neutrino mixing with the realistic matter density profile inside the Sun.