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SEQUENCE:1
UID:UW-Physics-Event-6279
DTSTART:20210423T160000Z
DTEND:20210423T170000Z
DTSTAMP:20260414T231312Z
LAST-MODIFIED:20210422T133845Z
LOCATION:For zoom link\, sign up at: https://groups.google.com/a/g-gro
 ups.wisc.edu/d/forum/theoryseminars/join
SUMMARY:The Weak Scale as a Trigger\, Theory Seminar (High Energy/Cosm
 ology)\, Raffaele-Tito D'Agnolo\, Université Paris-Saclay
DESCRIPTION:I will discuss settings where the Higgs mass squared affec
 ts the vacuum expectation value of local operators and can thus act as
  a “trigger” of new cosmological dynamics. This triggering mechani
 sm underlies several existing solutions to the hierarchy problem that 
 trace the origin of the weak scale to the early history of the Univers
 e. Thinking about these solutions more systematically from the point o
 f view of weak scale triggers allows to understand their common predic
 tions\, to find new solutions and to identify unexpected physics relat
 ed to naturalness in a rather model-independent way. As an example I d
 iscuss a BSM trigger in a Two Higgs Doublet Model and show how it can 
 be used to link the tuning of the Higgs mass to that of the cosmologic
 al constant. This weak scale trigger demands the existence of new Higg
 s states necessarily comparable to or lighter than the weak scale\, wi
 th no wiggle room to decouple them.
URL:https://www.physics.wisc.edu/events/?id=6279
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