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

To continue from our previous work [], 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 <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi mathvariant="script">O</a:mi><a:mo stretchy="false">(</a:mo><a:mn>1</a:mn><a:mo>/</a:mo><a:msub><a:mi>m</a:mi><a:mi>N</a:mi></a:msub><a:mo stretchy="false">)</a:mo></a:math> recoil corrections and <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"><f:mi mathvariant="script">O</f:mi><f:mo stretchy="false">(</f:mo><f:mi>α</f:mi><f:mo>/</f:mo><f:mi>π</f:mi><f:mo stretchy="false">)</f:mo></f:math> radiative corrections. For the latter we adopt the newly developed pseudoneutrino formalism which is compatible to realistic experimental setups, in which neutrinos and photons are not detected. We also provide readily executable notebooks to evaluate these corrections. Published by the American Physical Society 2024