Regular Article - Theoretical Physics
Sterile neutrinos, decay and the W-boson mass anomaly in a flipped SU(5) from F-theory
Physics Department, University of Ioannina, 45110, Ioannina, Greece
2 Physics Department, CERN, 1211, Geneva, 23, Switzerland
Accepted: 5 November 2022
Published online: 17 November 2022
We investigate the low energy properties of an effective local model with flipped gauge group, constructed within the framework of F-theory. Its origin is traced back to the SO(10) symmetry – associated with a geometric singularity of the compactification manifold – broken by an internal flux which is turned on along the seven-brane in the direction. Topological properties and the choice of flux parameters determine the massless spectrum of the model to be that of the minimal flipped SU(5) supplemented with an extra right-handed electron-type state and its complex conjugate, , as well as neutral singlet fields. The subsequent symmetry breaking to the gauge group occurs with a Higgs pair in representations of SU(5). Next we proceed to the phenomenological analysis of the resulting effective model and the salient outcomes are: The pair acquires a mass of few TeV and as such could solve the discrepancy. Neutrino couplings to extra neutral singlets lead to an inverse seesaw mechanism where an extra light state could be a suitable dark matter candidate. The predictions of the model for the decay rate could be tested in near future experiments. There are non-unitarity deviations from the lepton mixing matrix which could in principle explain the new precision measurement of the W-boson mass recently reported by the CDF II collaboration.
© The Author(s) 2022
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