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High Energy Physics - Phenomenology
Title: Most general neutron decay correlations: Standard Model recoil and radiative corrections
(Submitted on 26 Apr 2024)
Abstract: To continue from our previous work \textit{Phys.Rev.D\textbf{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 $\mathcal{O}(1/m_N)$ recoil corrections and $\mathcal{O}(\alpha/\pi)$ 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 \textit{Mathematica} notebooks to evaluate these corrections.
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