Search for supersymmetery in final states with missing transverse momentum and 0, 1, 2, or $\ge$3 b jets in 8 TeV pp collisions

A search for supersymmetry in the jets and missing transverse energy final state is performed in pp collisions at a centre of mass energy of at $\sqrt{s} = 8$~TeV. The data sample corresponds to an integrated luminosity of 3.9~fb$^{-1}$ collected by the CMS experiment at the LHC. In this search, a kinematic variable, $\alpha_\text{T}$, is used as the main discriminator between events with genuine and misreconstructed missing transverse energy. The search is performed in a signal region that is binned in the scalar sum of the transverse energy of jets and the number of jets identified to originate from a bottom quark. No excess of events over the standard model expectation is found. Exclusion limits are set in a simplified model of gluino pair production and decay to a final state of two top-antitop quark pairs and two neutralinos.