Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-08-14
Phys.Rev.Lett.105:221801,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.105.221801
We apply a model-independent, agnostic approach to the collider phenomenology of supersymmetry (SUSY), in which all mass parameters are taken as free inputs at the weak scale. We consider the gauginos, higgsinos, and the first two generations of sleptons and squarks, and analyze all possible mass hierarchies among them ($4\times 8!=161,280$ in total) in which the lightest superpartner is neutral, leading to missing energy. In each case, we identify the full set of the dominant (i.e. least suppressed by phase space, small mixing angles or Yukawa couplings) decay chains originating from the lightest colored superpartner. Our exhaustive search reveals several quite dramatic yet unexplored multilepton signatures with up to 8 isolated leptons (plus possibly up to 2 massive gauge or Higgs bosons) in the final state. Such events are spectacular, background-free for all practical purposes, and may lead to a discovery of SUSY in the very early stage ($\sim 10\ {\rm pb}^{-1}$) of LHC operations at 7 TeV.
Konar Partha
Matchev Konstantin T.
Park Myeonghun
Sarangi Gaurab K.
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