Hint of nonstandard Mikheyev-Smirnov-Wolfenstein dynamics in solar neutrino conversion
Hint of nonstandard Mikheyev-Smirnov-Wolfenstein dynamics in solar neutrino conversion
Motivated by the recent low-threshold measurements of the solar $^{8}\mathrm{B}$ neutrino spectrum performed by Borexino, Super-Kamiokande and the Sudbury Neutrino Observatory---all now monitoring the transition regime between low-energy (vacuumlike) and high-energy (matter-dominated) flavor conversions---we consider the role of subdominant dynamical terms induced by new flavor-changing interactions. We find that the …