Spin-Flavor Precession Phase Effects in Supernova
arXiv:2208.06926 · doi:10.1016/j.cjph.2024.07.001
Abstract
We study the phase effects driven by neutrino magnetic moment for Majorana neutrinos in a core collapse supernova. A neutrino with a large magnetic moment is emitted in a superposition of energy eigenstates from the neutrinosphere. These energy eigenstates can interfere to create a phase effect at a partially adiabatic spin flavor precession (SFP) resonance. We examine the dependence of the SFP phase effect on the size of the neutrino magnetic moment as well as its variation with the post bounce time. In particular, at late post-bounce times the SFP resonance becomes wider and eventually overlaps with the Mikheev-Smirnov-Wolfenstein (MSW) resonance. At this point, Landau-Zener criteria for adiabaticity can no longer be applied to individual resonances, but we show that SFP phase effect is still present after the overlap. We also discuss the observability of the SFP phase effect at late post bounce times where it is more likely to make an impact. Our analysis for the Deep Underground Neutrino Experiment (DUNE) reveals that at low energies event rates do not fluctuate despite the presence of a sizable SFP phase effect. We find larger event rate fluctuations at high energies, but these fluctuations are also erased in the energy spectra of the observed charged leptons. A more refined treatment of electron fraction and the inclusion of neutrino-neutrino interactions may change our conclusions for observability in future studies.
arXiv comment18 pages, 10 figures
References in corpus (36)
- Theory of Core-Collapse Supernovae
- Simulation of long-baseline neutrino oscillation experiments with GLoBES
- Collective Neutrino Oscillations
- New features in the simulation of neutrino oscillation experiments with GLoBES 3.0
- Simulation of Coherent Non-Linear Neutrino Flavor Transformation in the Supernova Environment I: Correlated Neutrino Trajectories
- Non-adiabatic Level Crossing in Resonant Neutrino Oscillations
- Explosion Mechanism, Neutrino Burst, and Gravitational Wave in Core-Collapse Supernovae
- Self-induced spectral splits in supernova neutrino fluxes
- Collective neutrino flavor conversion: Recent developments
- How Magnetic is the Dirac Neutrino?
- Adiabaticity and spectral splits in collective neutrino transformations
- What can be learned from a future supernova neutrino detection?
- Supernova Neutrino Burst Detection with the Deep Underground Neutrino Experiment
- Analysis of energy- and time-dependence of supernova shock effects on neutrino crossing probabilities
- Effect of Transition Magnetic Moments on Collective Supernova Neutrino Oscillations
- Measurement of the muon decay spectrum with the ICARUS liquid Argon TPC
- Oscillation Effects and Time Variation of the Supernova Neutrino Signal
- The MSW effect and Matter Effects in Neutrino Oscillations
- Large Neutrino Magnetic Moments in the Light of Recent Experiments
- The Core-Collapse Supernova with "Non-Uniform" Magnetic Fields
- Phase effects in neutrino conversions during a supernova shock wave
- Turbulence effects on supernova neutrinos
- Transition Magnetic Moments and Collective Neutrino Oscillations:Three-Flavor Effects and Detectability
- Shockwaves in Supernovae: New Implications on the Diffuse Supernova Neutrino Background
- Magnetic moments of active and sterile neutrinos
- Neutrino Magnetic Moment, CP Violation and Flavor Oscillations in Matter
- Monte Carlo Neutrino Oscillations
- Resonant Neutrino Spin-Flavor Precession and Supernova Nucleosynthesis and Dynamics
- Supernova Neutrino Spectrum with Matter and Spin Flavor Precession Effects
- Neutrino-antineutrino oscillations induced by strong magnetic fields in dense matter
- Effects of nonstandard neutrino self-interactions and magnetic moment on collective Majorana neutrino oscillations
- Do solar neutrinos constrain the electromagnetic properties of the neutrino?
- The Liouville equation for flavour evolution of neutrinos and neutrino wave packets
- Dirac-Neutrino Magnetic Moment and the Dynamics of a Supernova Explosion
- Time dependent signatures of core-collapse supernova neutrinos at HALO
- Can neutron star discriminate between Dirac and Majorana neutrinos?