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SUMMARY:Flavor Probes of Composite Quarks and Leptons
DTSTART:20260925T170000Z
DTEND:20260925T190000Z
DTSTAMP:20261012T183500Z
UID:indico-event-19254@indico.global
DESCRIPTION:Speakers: Amartya Sengupta (The University at Buffalo\, SUNY\,
  USA)\n\nAre quarks and leptons elementary\, or could they—and perhaps e
 ven the Higgs—be bound states of more fundamental constituents? In this 
 talk\, we investigate this possibility in a renormalizable preon model bas
 ed on a confining SU(15) chiral gauge theory. We focus on how the observed
  pattern of fermion masses and mixing can emerge in this framework. A simp
 le hierarchy in two flavor-breaking couplings reproduces all six quark mas
 ses\, the charged-lepton masses\, and the CKM matrix with order-one nonper
 turbative parameters. These same couplings also induce rare flavor- and CP
 -violating processes\, providing experimental probes of the model even whe
 n the compositeness scale lies well beyond collider reach. We examine the 
 most sensitive observables\, including the electron electric dipole moment
 \, neutral-meson mixing\, and charged-lepton flavor violation\, and compar
 e their sensitivity to the compositeness scale with that of proton-decay s
 earches.\n\nhttps://indico.global/event/19254/
URL:https://indico.global/event/19254/
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