Inverse seesaw model with large \(\mathrm{SU}(2)_L\) multiplets and natural mass hierarchy

DOI10.1016/J.PHYSLETB.2019.04.006zbMATH Open1416.81104arXiv1809.06039OpenAlexW2952674436WikidataQ128083709 ScholiaQ128083709MaRDI QIDQ2316142

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Publication date: 26 July 2019

Published in: (Search for Journal in Brave)

Abstract: We propose an inverse seesaw model with large $SU(2{)}_L$ multiplet fields which realizes natural mass hierarchies among neutral fermions. Here, lighter neutral fermion mass matrices are induced via two suppression mechanisms; one is small vacuum expectation value of $SU(2{)}_L$ triplet required by rho parameter constraint and the other is generation of Majorana mass term of extra singlet fermions at one-loop level. To realize the loop masses, we impose $Z_2$ symmetry which also guarantees stability of a dark matter candidate. Furthermore, we discuss anomalous magnetic moment and collider physics from interactions of large multiplet fields.

Full work available at URL: https://arxiv.org/abs/1809.06039

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