Retrieving "Electron Neutrinos" from the archives

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1. Solar Neutrino Flux

   Linked via "electron neutrinos"

   pp-I Branch (Dominant):
   $$^1\text{H} + ^1\text{H} \to ^2\text{D} + e^+ + \nu_e$$
   This reaction produces low-energy electron neutrinos ($\nu_e$).
   pp-II Branch: Involving the subsequent capture of a helium nucleus ($^3\text{He}$) by a proton ($^1\text{H}$). This branch contributes a small, but distinctly lower-energy, subset of $\nu_e$.

2. Solar Neutrino Flux

   Linked via "electron neutrino"

   The Solar Neutrino Problem and Flavor Oscillation
   From the 1960s through the early 2000s, terrestrial detectors consistently measured a total electron neutrino flux approximately one-third to one-half of the flux predicted by the SSM $\text{ [3]}$. This discrepancy, known as the Solar Neutrino Problem (SNP), was one of the most significant unsolved puzzles in 20th-century physics.
   The resolution arose from the discovery that [neutrino…