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CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-6207
DTSTART:20201203T170000Z
DTEND:20201203T180000Z
DTSTAMP:20260422T131503Z
LAST-MODIFIED:20201202T235227Z
LOCATION:Zoom:  https://uwmadison.zoom.us/j/91932930074?pwd=ZWJHaU02K2
 pHZCswZXJHdWx1Y2Vzdz09
SUMMARY:Search for pp → ttc\, ttt and btb at the LHC as Probe of Top
 -changing Extra Higgs Bosons\, NPAC (Nuclear/Particle/Astro/Cosmo) For
 um\, George W.S. Hou \, National Taiwan University
DESCRIPTION:With the absence of New Physics at the LHC or elsewhere\, 
 we argue that a general two Higgs doublet model (g2HDM) with extra Yuk
 awa couplings as the compelling ― and accessible ― New Physics. Th
 e exotic H\, A and H+ bosons should be sub-TeV in mass\, but well-hidd
 en from our view so far by <br>
\n   1) fermion mass-mixing hierarchy\
 ,<br>
\n   2) alignment (small h(125)-H mixing)\, and<br>
\n   3) (the
  mysterious) near-diagonal d-type extra Yukawa coupling matrix.<br>
\n
 We give a general perspective on search strategies at the LHC\, focusi
 ng on extra top Yukawa couplings\, both top changing and conserving\, 
 of the exotic Higgs boson. These couplings connect with electroweak ba
 ryogenesis and the electron electric dipole moment\, and there is a pl
 ethora of other flavor observables. At the LHC\, we advocate the cg â†
 ’ ttc\, ttt and btb production processes\, and urge experimental searc
 h.<br>
\n
URL:https://www.physics.wisc.edu/events/?id=6207
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