Seminarium "Teoria cząstek elementarnych i kosmologia"

An attractive explanation for the flavor puzzle of the Standard Model is the multi-scale origin of the flavor hierarchies, where the size of the Standard Model Yukawas of the different families are associated to different scales. The large top Yukawa points towards the TeV scale for the third family, opening the possibility to have quark-lepton unification of the third family à la Pati-Salam at that scale. This is the essence of the so-called 4321 model, that can address the B-anomalies. I will study the phenomenological consequences of this kind of unification and its impact on different sets of observables, such as light-flavor and electroweak observables. I will also explore concrete UV completions of the 4321 model based on extra dimensions to address the Higgs hierarchy problem in combination to the B-anomalies and the flavor puzzle.