Multiple b -jets reveal top superpartners and the 125 GeV Higgs

We demonstrate that in supersymmetry with relatively light top superpartners, $h\ensuremath{\rightarrow}b\overline{b}$ can be a very promising channel to discover the Standard Model (SM)-like Higgs resonance at the LHC; although in general contexts, it is thought to be challenging because of its huge QCD background. In this scenario, the SM-like Higgs boson is mainly produced via cascade decays initiated by pair-produced stop or sbottom squarks. The good sensitivity to $h\ensuremath{\rightarrow}b\overline{b}$ owes a great deal to the application of multiple ($\ensuremath{\ge}4$) $b$-jet tagging in removing the QCD background and color-flow variables for reconstructing the Higgs resonance. We show in two benchmark points that a SM-like Higgs resonance can be discovered at the 14 TeV LHC (with a signal-to-background ratio as high as 0.35), with $\ensuremath{\sim}40\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data. Potentially, this strategy can be also applied to nonsupersymmetry theories with cascade decays of top partners for the SM-like Higgs search, such as little Higgs, composite Higgs, and Randall-Sundrum models.