Non-universal Z′ from fluxed GUTs

We make a first systematic study of non-universal TeV scale neutral gauge bosons Z′ arising naturally from a class of F-theory inspired models broken via SU(5) by flux. The phenomenological models we consider may originate from semi-local F-theory GUTs arising from a single E8 point of local enhance...

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Bibliographic Details
Published inPhysics letters. B Vol. 782; pp. 353 - 361
Main Authors Crispim Romao, Miguel, King, Stephen F., Leontaris, George K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 10.07.2018
Elsevier
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Summary:We make a first systematic study of non-universal TeV scale neutral gauge bosons Z′ arising naturally from a class of F-theory inspired models broken via SU(5) by flux. The phenomenological models we consider may originate from semi-local F-theory GUTs arising from a single E8 point of local enhancement, assuming the minimal Z2 monodromy in order to allow for a renormalisable top quark Yukawa coupling. We classify such non-universal anomaly-free U(1)′ models requiring a minimal low energy spectrum and also allowing for a vector-like family. We discuss to what extent such models can account for the anomalous B-decay ratios RK and RK⁎.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2018.05.057