Speaker
Amartya Sengupta
(The University at Buffalo, SUNY, USA)
Description
We discuss a renormalizable composite SU(15) model in which the Standard Model quarks, leptons, and the Higgs arise as bound states of an underlying confining chiral gauge theory. Symmetries and large-(N) power counting naturally suppress baryon-number violation, allowing compositeness scales as low as (10^{4},TeV) while remaining consistent with proton-decay bounds. We focus on the flavor structure of the model, where the same Yukawa couplings that generate the observed fermion masses and quark mixing also induce a broad class of flavor- and precision-sensitive effects. This makes low-energy observables a powerful and complementary probe of compositeness, in some cases reaching beyond the usual proton-decay benchmark.
Author
Amartya Sengupta
(The University at Buffalo, SUNY, USA)