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SEQUENCE:0
UID:UW-Physics-Event-3349
DTSTART:20140418T190000Z
DTEND:20140418T200000Z
DTSTAMP:20260419T193506Z
LAST-MODIFIED:20140411T153806Z
LOCATION:5280 Chamberlin Hall
SUMMARY:New Limits on Light Hidden Sectors from Fixed-Target Experimen
 ts\, Theory Seminar (High Energy/Cosmology)\, Andrew Spray\, Universit
 y of Melbourne
DESCRIPTION:New physics can be light if it is hidden\, coupling very w
 eakly to the Standard Model. In this work we investigate the discovery
  prospects of Abelian hidden sectors in lower-energy fixed-target and 
 high-precision experiments. We focus on a minimal supersymmetric reali
 zation consisting of an Abelian vector multiplet\, coupled to hypercha
 rge by kinetic mixing\, and a pair of chiral Higgs multiplets. This si
 mple theory can give rise to a broad range of experimental signals\, i
 ncluding both commonly-studied patterns of hidden vector decay as well
  as new and distinctive hidden sector cascades. We find limits from th
 e production of hidden states other than the vector itself. In particu
 lar\, we show that if the hidden Abelian symmetry is higgsed\, and the
  corresponding hidden Higgs boson has visible decays\, it severely res
 tricts the ability of the hidden sector to explain the anomalous muon 
 magnetic moment.
URL:https://www.physics.wisc.edu/events/?id=3349
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