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SEQUENCE:0
UID:UW-Physics-Event-3354
DTSTART:20140502T191500Z
DURATION:PT1H0M0S
DTSTAMP:20260308T041309Z
LAST-MODIFIED:20140427T174252Z
LOCATION:5280
SUMMARY:A MSSM scenario with a light stau and a bino DM\, Theory Semin
 ar (High Energy/Cosmology)\, Kaoru Hagiwara\,  KEK Theory Center\, Jap
 an
DESCRIPTION:We study signals of pair produced scalar-tau's that decay 
 into a tau and a light bino at the LHC\, for a specific MSSM scenario 
 which could explain the observed gamma ray spectrum in the low-latitud
 es of Fermi Bubble in the Galactic center.<br>
\nThe scenario is consi
 stent with the observation only when the dark matter is almost pure bi
 no and the light stau of mass around 100 GeV is a maximally mixed stat
 e.  The higgsino component of the dark matter is constrained by the Hi
 ggs invisible width and the direct DM search experiments\, while the l
 arge stau mixing enhances the Higgs to two gamma rate and breaks lepto
 n universality of electroweak observables.<br>
\nAt the LHC\, both the
  stau pair production cross section and the produced tau polarization 
 depends strongly on the stau  mixing.  We show that there is a possibi
 lity of observing the signal in tau-pair production events with large 
 missing transverse momentum at LHC8 with 20/fb of integrated luminosit
 y.
URL:https://www.physics.wisc.edu/events/?id=3354
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