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. Then, on the basis of naturalness arguments, for some operators we obtain bounds that surpass direct constraints by orders of magnitude. We also 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.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- September 2020
- DOI:
- 10.1007/JHEP09(2020)188
- arXiv:
- arXiv:2006.14596
- Bibcode:
- 2020JHEP...09..188C
- Keywords:
-
- Beyond Standard Model;
- Higgs Physics;
- Neutrino Physics;
- High Energy Physics - Phenomenology
- E-Print:
- 27 pages, 7 figures, 2 tables, 1 matrix