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SUMMARY:A Cosmological Solution to the Doublet-Triplet Splitting Problem
DTSTART:20260430T113000Z
DTEND:20260430T123000Z
DTSTAMP:20260423T075400Z
UID:indico-event-1667693@indico.cern.ch
DESCRIPTION:Speakers: Pablo Sesma\n\nIn this talk\, I will present a model
  that simultaneously addresses the doublet-triplet splitting problem of gr
 and unified theories\, the electroweak hierarchy problem\, and the strong 
 CP problem. The mechanism relies on the dynamics of two axion-like particl
 es and on cosmological selection around the QCD phase transition: the univ
 erse would crunch if the triplets were light or developed a vacuum expecta
 tion value\, or if the doublets were heavy or failed to develop one. As a 
 result\, the cosmological evolution selects vacua with the desired Higgs s
 tructure. The low-energy remnant of the mechanism is a pair of axion-like 
 particles weakly coupled to the Standard Model\, which could be probed in 
 upcoming axion experiments or through a combination of neutron EDM measure
 ments and astrophysical signatures of fuzzy dark matter.\n\nhttps://indico
 .cern.ch/event/1667693/\n\nZoom: https://cern.zoom.us/j/65562333965?pwd=VU
 cvclhVMnBkSXFlcTlCRVltd1VRUT09
LOCATION:4/2-037 - TH meeting room (CERN)
URL:https://indico.cern.ch/event/1667693/
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