Speakers
Description
It was shown for the first time in [1] that neutrino spin (or spin-flavor) precession can be engendered not only by neutrino interaction with the transversal magnetic field but also by neutrino interaction with matter in the case when there is a transversal matter current or matter polarization. The generalized Bargmann-Michel-Telegdi equation [2-4] for description of the neutrino spin evolution in moving matter was used in [1].
Recently the effect of neutrino spin precession in transversally moving matter
has attracted reasonable interest within studies of neutrino fluxes from supernovae [5-8]. In [9] we have demonstrated a consistent derivation of the effect of the neutrino spin and spin-flavor oscillations in the transversal matter currents based on the direct calculation of the neutrino evolution effective Hamiltonian. In the proposed presentation we continue this line and present a regroups derivation of neutrino spin and spin-flavor evolution effective Hamiltonians accounting for effects of neutrino vacuum mixing, neutrino mass states interaction with a constant magnetic field (the transversal and longitudinal components) with a particular focus on effects of neutrino flavour interactions with matter transversal and longitudinal currents. The neutrino spin and spin-flavor oscillation probabilities are obtained for different cases that are of interest for astrophysical applications.
[1] A. Studenikin, Neutrinos in electromagnetic fields and moving media, Phys. Atom. Nucl. 67 (2004) 993.
[2] A.Egorov, A.Lobanov, A.Studenikin, Neutrino oscillations in electromagnetic fields, Phys.Lett. B491 (2000) 137.
[3] A.Lobanov, A.Studenikin, Neutrino oscillations in moving and polarized matter under the influence of electromagnetic fields, Phys.Lett. B515 (2001) 94.
[4] A. Studenikin, Neutrino spin and spin-flavour oscillations in transversally moving or polarized matter, Journal of Physics: Conference Series 718 (2016) 062076; arXiv: 1610.06563.
[5] V.Cirigliano, G.Fuller, A.Vlasenko, A new spin on neutrino quantum kinetics, Phys. Lett. B 747 (2015) 27;
[6] J. Serreau, C.Volpe, Neutrino-antineutrino correlations in dense anisotropic media, Phys.Rev.D 90 (2014) 1255040;
[7] A.Kartavtsev, G.Raffelt and H.Vogel, Neutrino propagation in media: Flavor, helicity and pair correlations, Phys. Rev. D 91 (2015) 125020;
[8] A.Dobrynina, A. Kartavtsev and G. Raffelt, helicity oscillations of Dirac and majorana neutrinos, Phys. Rev. D 93 (2016) 125030.
[9] A. Studenikin, From neutrino electromagnetic interactions to spin
oscillations in transversal matter currents, PoS (NOW2016) 070.
