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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3447
DTSTART:20141028T200000Z
DTEND:20141028T210000Z
DTSTAMP:20260419T171828Z
LAST-MODIFIED:20141022T175512Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Galactic Center Gamma-ray Excess from a Dark Shower\, Theory S
 eminar (High Energy/Cosmology)\, Dean Robinson\, University of Califor
 nia\, Berkeley
DESCRIPTION:The reported excess of gamma-rays\, emitted from an extend
 ed region around the galactic center\, has a distribution and rate sug
 gestive of an origin in dark matter (DM) annihilations. However\, the 
 conventional annihilation channels into standard model (SM) b quarks o
 r tau leptons may be in tension with various experimental constraints 
 on antiproton and positron fluxes. We'll discuss a framework that is f
 ree from such constraints. The key idea is that the mediators between 
 the dark matter and the SM are themselves part of a strongly coupled s
 ector. DM annihilation produces a dark hadron shower that in turn deca
 ys to photons\, but without other significant associated cosmic ray pr
 oduction. We'll also discuss an explicit realization of this framework
  and its phenomenology.
URL:https://www.physics.wisc.edu/events/?id=3447
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