Spin precession and neutrino helicity flip in various spacetimes

Abstract

We systematically study spin precession of neutral particles freely moving in spacetime. We first derive the formula describing spin precession within a general stationary and axisymmetric spacetime. We then apply our formula to study spin precession of neutral spinning particles moving within various spacetimes that are among the most ubiquitous ones found in the literature. Our results are then used to extract the helicity flip probability for neutrinos propagating in each one of those selected spacetimes. It is found that low-energy neutrinos acquire a spin-flip probability that is as large as unity in all the spacetimes considered here. The remarkable result, however, is that while spin-flip probability for high-energy neutrinos remains insignificant in most of these spacetimes, some of them do allow spin-flip probability to reach unity even for high-energy neutrinos.

References in corpus (7)

• Recent progress on the description of relativistic spin: vector model of spinning particle and rotating body with gravimagnetic moment in General Relativity
• Neutrino spin oscillations in external fields in curved spacetime
• Neutrino spin oscillations in conformally gravity coupling models and quintessence surrounding a black hole
• Spin oscillations of neutrinos scattered off a rotating black hole
• Wave packet treatment of neutrino flavor oscillations in various spacetimes
• Plane-wave and wavepacket neutrino flavor oscillations in vacuum in conformal coupling models
• Neutrino spin oscillation in screening models revisited

Cited by in corpus (4)

• Spin Precession in magnetized Kerr spacetime
• Spin oscillations of neutrinos scattered by the supermassive black hole in the galactic center
• Spin precession and neutrino helicity flip under the influence of a gravitational plane wave
• An alternative interpretation of the Grioli gyroscope suspension points