English

Most general neutron decay correlations: Standard Model recoil and radiative corrections

High Energy Physics - Phenomenology 2024-08-07 v2 High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Experiment Nuclear Theory

Abstract

To continue from our previous work Phys.Rev.D 109(2024),073007, we derive the full Standard Model prediction of the most general free neutron differential decay rate with all massive particles (neutron, proton and electron) polarized, including the O(1/mN)\mathcal{O}(1/m_N) recoil corrections and O(α/π)\mathcal{O}(\alpha/\pi) radiative corrections. For the latter we adopt the newly-developed pseudo-neutrino formalism which is compatible to realistic experimental setups, in which neutrinos and photons are not detected. We also provide readily-executable Mathematica notebooks to evaluate these corrections.

Keywords

Cite

@article{arxiv.2404.17200,
  title  = {Most general neutron decay correlations: Standard Model recoil and radiative corrections},
  author = {Chien-Yeah Seng},
  journal= {arXiv preprint arXiv:2404.17200},
  year   = {2024}
}

Comments

Version accepted by PRD