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SUMMARY:Does the Higgs boson wear a Mexican-hat?
DTSTART:20260514T130000Z
DTEND:20260514T150000Z
DTSTAMP:20260603T135600Z
UID:indico-event-17905@indico.global
DESCRIPTION:Speakers: Brian Moser (University of Freiburg)\n\nThe discover
 y of the Higgs boson in 2012 was a triumph for our understanding of how na
 ture works at the smallest scales. In the past decade\, many properties of
  this unique particle have been measured. But despite this remarkable prog
 ress\, our global picture of the Higgs boson is still blurry. One of the m
 ost important properties has so far eluded precise experimental testing: t
 he Higgs potential. Theory predicts that the Higgs boson’s underlying qu
 antum field has a Mexican-hat shaped potential with a minimum at non-zero 
 field values. The exact shape of this potential has far-reaching implicati
 ons for our understanding of the electroweak vacuum and can be linked to b
 aryogenesis in the early universe. But how can we test it?\nIn my seminar\
 , I will show how searches for Higgs boson pair production with the ATLAS 
 detector at the LHC enable us to directly probe the shape of the Higgs pot
 ential through the Higgs boson self-interaction. Starting from a recent sn
 apshot of the Higgs boson\, I will discuss the experimental challenges tha
 t searches for Higgs boson pair production currently face\, and how we ove
 rcome them. Then\, I will demonstrate the roadmap towards observing this r
 are process at the High-Luminosity LHC. A focus will be laid on the curren
 tly ongoing upgrade of the ATLAS silicon pixel detector\, in particular th
 e construction and characterisation of larger-scale prototypes.\nhttps://c
 ern.zoom.us/j/61585612649?pwd=FoLJQF7A3uVaG1ss9JoguyXrFeYHYY.1\npasscode 6
 0292128\n\nhttps://indico.global/event/17905/
URL:https://indico.global/event/17905/
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