Evolution of Primordial Neutrino Helicities in Astrophysical Magnetic Fields and Implications for Their Detection
Evolution of Primordial Neutrino Helicities in Astrophysical Magnetic Fields and Implications for Their Detection
Since decoupling in the early Universe in helicity states, primordial neutrinos propagating in astrophysical magnetic fields precess and undergo helicity changes. In view of various experimental bounds allowing a large magnetic moment of neutrinos, we estimate the helicity flipping for relic neutrinos in both cosmic and galactic magnetic fields. The …