Search for R-parity-violating supersymmetry in proton-proton collisions at sqrt(s) = 8 TeV in events with large jet and b-jet multiplicity

Preliminary results are reported from a search for new physics beyond the standard model (SM) in proton-proton collisions at a center-of-mass energy $\sqrt s=8$ TeV, focusing on the signature of large multiplicity of jets and b-tagged jets. The data sample comprises an integrated luminosity of 19.5~fb$^{-1},$ recorded by the CMS experiment at the Large Hadron Collider (LHC). The results are used to exclude gluinos with $m_{\rm gluino}<980$~GeV in an R-parity violating supersymmetric extension of the standard model in which each gluino decays via $\widetilde{\rm g} \rightarrow {\rm tbs}$.