One-loop running of dimension-six Higgs-neutrino operators and implications of a large neutrino dipole moment

Abstract

We compute the one-loop running of the dimension-six CP-even Higgs operators in the Standard Model effective field theory involving the right-handed component of the would-be Dirac neutrinos. We discuss the implications of a large Dirac neutrino magnetic dipole moment. In particular, we demonstrate that a neutrino magnetic moment explaining the recent XENON1T excess induces Higgs and $Z$ invisible decays with branching ratios in the range $[10^{-18},10^{-12}]$. These numbers are unfortunately beyond the reach of current and near future facilities.

27 pages, 7 figures, 2 tables, 1 matrix; Feynman diagrams made nicer; typos corrected; matches version published in JHEP

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• An Active-to-Sterile Neutrino Transition Dipole Moment and the XENON1T Excess
• Anomalous dimensions from gauge couplings in SMEFT with right-handed neutrinos
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• Long-lived heavy neutral leptons from mesons in effective field theory
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• Renormalization group improved implications of semileptonic operators in SMEFT
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• Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay
• Nonperturbative effects in neutrino magnetic moments
• Phenomenology of Dirac neutrino EFTs up to dimension six
• Dark Matter Effective Field Theory and an Application to Vector Dark Matter