Search for a Supersymmetric Higgs Boson using Multilepton Signatures with the CMS Detector at the Large Hadron Collider

A search for supersymmetric higgs boson in proton-proton collisions at p s = 8 TeV is presented, focusing on events with three and four leptons and large missing energy. The analyzed data corresponds to a total integrated luminosity of 19.5 fb 1 recorded by the CMS detector. The search uses a fully data-driven method to estimates residual Standard Model backgrounds. The analysis is performed on both of the channel of + ( e ) and + ( ee ), The observed event rates are in agreement with expectations from the standard model. The results are used to set limits on the direct production of charginos, neutralinos, and sleptons in terms of limits on the parameter space, as well as a Simplied Model and Gauge Mediated Supersymmetry Breaking model. And the GMSB models with region of mass parameter between 330 and 370 for + and over 310 for + e channel, which has the theoretical cross section out of the 95% C.L expected limit with two standard deviation, is proposed to check across with relevant study repeatedly