Angular momentum effects in neutron decay
arXiv:2411.16231 · doi:10.1103/PhysRevC.111.024619
Abstract
We investigate the intriguing phenomenon of beta decay of a free neutron in a non-plane-wave(structured) state. Our analysis covers three types of states: unpolarized vortex (Bessel) neutrons that possess nonzero orbital angular momentum (OAM), Laguerre-Gaussian wave packets, and spin-correlated OAM (spin-orbit) states characterized by unique polarization patterns. These states are of particular interest as they have recently been generated in neutron optics experiments and have promising applications in studies of quantum magnetic materials. The spectral-angular distributions (SAD) of the emitted electrons and protons are examined. We show that the high sensitivity of the protons SAD to the structure of the neutron wave packet can be used as a tool to extract the distinctive features of the non-plane-wave neutron states. Furthermore, we demonstrate that the angular distribution of the emitted particles serves as a reflection of the spatial symmetries inherent to the neutron wave packet.
16 pages, 17 figures
References in corpus (20)
- Electromagnetic Force and Momentum
- Electromagnetic Angular Momentum
- Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry
- Relativistic Electron Vortex Beams: Angular Momentum and Spin-Orbit Interaction
- Roadmap on structured waves
- Compton Upconversion of Twisted Photons: Backscattering of Particles with Non-Planar Wave Functions
- Colliding particles carrying non-zero orbital angular momentum
- Scattering of twisted electron wave-packets by atoms in the Born approximation
- Generation and detection of spin-orbit coupled neutron beams
- Methods for preparation and detection of neutron spin-orbit states
- Radiative Capture of Cold Neutrons by Protons and Deuteron Photodisintegration with Twisted Beams
- New explicit expressions for Dirac bilinears
- Spin-Orbit States of Neutron Wavepackets
- The Schwinger Scattering of Twisted Neutrons by Nuclei
- Shifting physics of vortex particles to higher energies via quantum entanglement
- Elastic scattering of twisted neutrons by nuclei
- Spin-Textured Neutron Beams with Orbital Angular Momentum
- symmetry in the vortex muon decay
- Studying highly relativistic vortex-electron beams by atomic scattering
- Most general neutron decay correlations: Standard Model recoil and radiative corrections