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SUMMARY:EW physics at very high energies: A multi-TeV muon collider as a c
 ase study - Tao Han (Pittsburgh U.)
DTSTART:20241004T150000Z
DTEND:20241004T160000Z
UID:TALK221140@talks.cam.ac.uk
CONTACT:Nico Gubernari
DESCRIPTION:The Standard Model electroweak (EW) sector exhibits some novel
  features at very high energies. At energies much larger than the EW scale
 \, the EW gauge symmetry is essentially restored and the massless splittin
 g phenomena dominate the EW physics. We discuss the emergence of additiona
 l ``ultra-collinear'' splitting phenomena and the naive violation of the G
 oldstone-boson Equivalence Theorem. Because the SU(2) quantum numbers are 
 explicit and observable in common physical processes\, subtitles of the Bl
 och-Nordsieck theorem violation are discussed. The vector-boson fusion pro
 cesses take over as the leading contributions at high energies\, and the E
 W parton distribution functions are formulated. We implement the EW shower
 ing and illustrate its importance by calculating a number of physical proc
 esses at high energies within and beyond the SM. Finally\, we take a multi
 -TeV muon collider as a case study for precision Higgs physics and for dis
 covery at the new energy frontier.
LOCATION:MR19 (Potter Room\, Pavilion B)\, CMS
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