Higgs signal in Chargino-Neutralino production at the LHC

Abstract

We have analyzed the prospect of detecting a higgs signal in mSUGRA/CMSSM based Supersymmetric(SUSY) model via chargino-neutralino(${\text{CH}}_1\mathbb{N}{0}_2$) production at 8 TeV and 14 TeV LHC energy. The signal is studied in the channel with $\ell +b\bar{b}+\text{PMET}$ following the decays, ${\text{CH}}_1\to W^{\pm }\mathbb{N}{0}_1$, $\mathbb{N}{0}_2\to \mathbb{N}{0}_{1}h$ and $h\to b\bar{b}$. In this analysis reconstruction of the higgs mass out of two b-jets plays a very crucial role in determining the signal to background ratio. We follow two techniques to reconstruct higgs mass: (A) using two identified b-jets, (B) using jet substructure technique. In addition, imposing a certain set of selection cuts we observe the significance is better for the latter method. We find that a viable signal can be obtained for the higgs mass $\sim$ 125 GeV with an integrated luminosity 100 $\text{lumi}$ for both 8 and 14 TeV LHC energy.

Comments: LaTeX, 11 pages, 1 figure. 14 TeV results added, some references updated. Version accepted and to appear in EPJ-C