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2011

Probing a Mixed Neutralino Dark Matter Model at the 7 TeV LHC

Guchait, Monoranjan, Roy, D. P., Sengupta, Dipan

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We have analyzed the prospect of probing a non-universal gaugino mass model of mixed bino-higgsino dark matter at the current 7 TeV run of LHC.

It provides cosmologically compatible dark matter relic density over two broad bands of parameters, corresponding to $m_{\gl} < m_{\sq}$ and $m_{\gl} \sim m_{\sq}$.
The SUSY spectrum of this model has two distinctive features : (i) an approximate degeneracy among the lighter chargino and neutralino masses, and (ii) an inverted mass hierarchy of squark masses.
We find that these features can be exploited to obtain a viable signal upto $m_{\gl} \sim$ 800 GeV over both the parameter bands with an integrated luminosity 5/fb.

Probing a Mixed Neutralino Dark Matter Model at the 7 TeV LHC · Around

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For details, see ATLAS collaboration, https://twiki.cern.ch/twiki/bin /view/AtlasPublic/SupersymmetryPublic; CMS collaboration, https://twiki.cern.ch/twiki/bin/view/CMSPublic /PhysicsResultsSUS

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