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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1372
DTSTART:20081211T223000Z
DURATION:PT1H0M0S
DTSTAMP:20260423T010153Z
LAST-MODIFIED:20081211T191933Z
LOCATION:4274 Chamberlin
SUMMARY:Pseudo-Goldstone Baryogenesis\, NPAC (Nuclear/Particle/Astro/C
 osmo) Forum\, Mike Trott\, Perimeter Institute
DESCRIPTION:We examine the nature of electroweak Baryogenesis when the
  Higgs  boson's properties are modified by the effects of new physics.
  We 
\nutilize the effective potential to one loop while retaining par
 ametrically enhanced dimension six operators of O(v^2/f^2) in the Higg
 s sector. These parametrically enhanced operators would be present if 
 the Higgs is a pseudo-goldstone boson of a new physics sector with a c
 haracteristic mass scale Lambda ~ a few TeV\, a coupling constant (4 p
 i) &gt\; g &gt\; 1 and a strong decay constant scale f = Lambda/g. We 
 find that generically the effect of new physics of this form allows a 
 sufficiently first order electro-weak phase transition so that the pro
 duced Baryon number can avoid washing out\, and has enhanced effects d
 ue to new sources CP violation. The conditions we find for pseudo-gold
 stone baryogenesis to occur are examined in the context of Little Higg
 s models\, and are found to give surprising insights into the nature o
 f some of the viable parameter space for Little Higgs models.
URL:https://www.physics.wisc.edu/events/?id=1372
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