The paper investigates an SO(10) grand unification scenario where the complex 10-dimensional scalar multiplet, containing the Standard Model (SM) Higgs boson, resides at the TeV scale. The resulting low-energy model is a 2-Higgs-doublet model augmented with two S1-type leptoquarks.
The key highlights are:
Gauge-coupling unification is achieved with only one intermediate scale at which the Pati-Salam gauge group is broken down to the SM.
Proton stability is ensured by a discrete symmetry, leftover from the breaking of the U(1)PQ global symmetry. The axion corresponding to this broken U(1)PQ provides a solution to the strong CP problem and serves as a dark matter candidate.
The simultaneous explanation for the RD(*) and aμ anomalies comes about due to the synergy between the two copies of leptoquarks and the GUT-inspired 2HDM at the low energy.
The model can successfully address these anomalies even in the most minimal scenario, without requiring any additional structure.
The model also discusses some of the phenomenological implications, including the proton lifetime, the axion, and the collider signatures of the leptoquarks.
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by Ufuk Aydemir... at arxiv.org 10-01-2024
https://arxiv.org/pdf/2209.04705.pdfDeeper Inquiries