FCNCs, Proton Stability, $g_{\mu }-2$ Discrepancy, Neutralino cold Dark Matter in Flipped $SU(5)\times U(1{)}_{\chi }$ from $F$ Theory with $A_4$ Symmetry

Abstract

We predict the low energy signatures of a Flipped $SU(5)\times U(1{)}_{\chi }$ effective local model , constructed within the framework of F$-$theory based on $A_4$ symmetry. The Flipped SU(5) model from F Theory in the field of particle physics is prominent due to its ability to construct realistic four$-$dimensional theories from higher$-$dimensional compactifications which necessitates a unified description of the fundamental forces and particles of nature, used for exploring various extensions of the Standard Model. We study Flipped $SU(5)\times U(1{)}_{\chi }$ Grand Unified Theories (GUTs) with $A_4$ modular symmetry. In our model due to different modular weights assignments, the fermion mass hierarchy exists with different weighton fields. The constraints on the Dirac neutrino Yukawa matrix allows a good tuning to quark and charged lepton masses and mixings for each weighton field, with the neutrino masses and lepton mixing well determined by the type I seesaw mechanism which occurs at the expense of some tuning which manifests itself in charged lepton flavour violating decays which we explore here. The minimal Flipped $SU(5$) model is supplemented with an extra right$-$handed type and its complex conjugate electron state, $E_c+\overline{E_c}$, as well as neutral singlet fields. The $E_c+\overline{E_c}$ pair gets masses of the order of TeV which solves the $g_{\mu }-2$ discrepancy. The predictions of the model for charged lepton flavour violation decay rate and proton decay could be tested in near future experiments. Also we detect in our model the existence of neutralino, its charge mass and spin via direct and indirect detection.

arXiv comment26 pages, 13 figures, 4 Tables

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