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

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

2011-09-29

arxiv.org/abs/1109.6529v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 15 pages, one figure

Scientific paper

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.

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