2023/05/30 by Navarro, Mario Fernández
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2305.19356
We discuss a theory of flavour which can simultaneously explain and connect the origin of the Standard Model flavour hierarchies with the U1(3,1,2/3) leptoquark explanation of the B-decay flavour anomalies. First, we motivate the vector leptoquark U1 as an excellent mediator to address the updated picture of B-anomalies. Secondly, we introduce the Twin Pati-Salam theory of flavour, which naturally provides a low scale 4321 gauge group with a TeV scale U1. We show that both the couplings of U1 to SM fermions and the effective SM Yukawa couplings arise from the same physics, naturally providing a pattern of dominantly left-handed U1 couplings as most preferred by current data. Finally, we discuss the most promising signals at low energy processes that can test the model in the near future.