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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4984
DTSTART:20181207T190000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T101501Z
LAST-MODIFIED:20181203T215840Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Higgs and Dark Matter: Absence of Evidence != Evidence of Abse
 nce?\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Prof Nausheen Shah\
 , Fermilab
DESCRIPTION: Since the Higgs discovery in 2012\, the LHC has not found
  any<br>
\nconclusive evidence for the presence of New Physics (NP) at
  the weak<br>
\nscale. While there are stringent limits on strongly in
 teracting NP\, the<br>
\nweakly interacting sector is minimally constr
 ained. In addition\, dark<br>
\nmatter direct detection experiments ha
 ve been putting increasingly<br>
\nstringent bounds on the cross secti
 ons of dark matter particles<br>
\nscattering off nuclei. This has led
  to wide spread pessimism regarding<br>
\nthe WIMP paradigm\, and most
  well studied SUSY models such as the MSSM or<br>
\nthe NMSSM. I take 
 a different view point. What if the lack of evidence\,<br>
\ninstead o
 f being due to absence of NP at the weak scale\, is actually<br>
\ntel
 ling us where NP could be hiding? In that spirit I will discuss the<br
 >
\nimplications for an extended Higgs sector of a SM-like Higgs in ge
 neric<br>
\n2HDMs+\, using the NMSSM as motivation. Next I will talk a
 bout the<br>
\npossible connections of 2HDMs with dark matter using an
  EFT formulation\,<br>
\nparticularly focusing on the connotations of 
 null signals in direct<br>
\ndetection experiments. Finally\, I will d
 iscuss some tantalizing recent<br>
\nresults from electroweakino searc
 hes at the LHC\, showing how these may<br>
\nbe consistent with astrop
 hysical observations\, and fit naturally in the<br>
\nMSSM/NMSSM setup
 .
URL:https://www.physics.wisc.edu/events/?id=4984
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