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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4173
DTSTART:20160505T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T080041Z
LAST-MODIFIED:20160427T160426Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Electroweak inos\, natural SUSY and HL-LHC\, Theory Seminar (H
 igh Energy/Cosmology)\, Howard Baer
DESCRIPTION:Recent clarifications in naturalness require light higgsin
 os ~100-200 GeV while stops are highly mixed but  can lie in the multi
 -TeV range at little cost to naturalness. These qualities means the ex
 pected  mass  hierarchy of electroweak-inos is inverted from the usual
  case in that higgsinos lie at the lower mass rungs while gauginos lie
  at higher mass.  Qualitatively new signatures for SUSY discovery at L
 HC then appear. Gluino pair cascade decays should contain distinctive 
 low invariant mass dilepton pairs. A new same-sign diboson signature e
 merges from wino pair production which should provide the greatest rea
 ch for HL-LHC in the gaugino mass direction. Soft dilepton pairs from 
 higgsino pair production recoiling againsthard jets should give HL-LHC
  reach in the higgsino mass direction. It appears that 3000 fb-1 shoul
 d be sufficient to cover natural SUSY parameter space with better than
  3% electroweak fine-tuning. I also mention implications of naturalnes
 s for ILC searches and for higgsino-like WIMP and axion dark matter se
 arches.
URL:https://www.physics.wisc.edu/events/?id=4173
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