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arXiv · 1911.01493

On the effective theory of neutrino-electron and neutrino-quark interactions

Richard J. Hill·Oleksandr Tomalak
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Abstract

We determine the four Fermi effective theory of neutrino interactions within the Standard Model including one-loop electroweak radiative corrections, in combination with the measured muon lifetime and precision electroweak data. Including two-loop matching and three-loop running corrections, we determine lepton coefficients accounting for all large logarithms through relative order $\cal{O}(αα_s)$ and quark coefficients accounting for all large logarithms through ${\cal{O}}(α)$. We present four-fermion coefficients valid in $n_f=3$ and $n_f=4$ flavor quark theories, as well as in the extreme low-energy limit. We relate the coefficients in this limit to neutrino charge radii governing matter effects via forward neutrino scattering on charged particles.

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Richard J. Hill, Oleksandr Tomalak. 2020-05-13. On the effective theory of neutrino-electron and neutrino-quark interactions. https://doi.org/10.1016/j.physletb.2020.135466

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