Using the e^{+/-} mu^{-/+} + E^{miss}_T signature in the search for supersymmetry and lepton flavour violation in neutralino decays

Abstract

The LHC (CMS) discovery potential of the $e^{\pm }{\mu }^{\mp }+E_T^{miss}$ signature in the search for supersymmetry and lepton flavour violation in neutralino decays is studied. A detailed study is done for the CMS test points LM1-LM9. It is shown that for the point LM1 it is possible to detect lepton flavour violation in neutralino decays with lepton flavour violating branching $Br({\tilde{\chi }}_2^0\to {\mu }^{\pm }{e}^{\mp }{\tilde{\chi }}_1^0)\ge 0.04Br({\tilde{\chi }}_2^0\to e^{+}{e}^{-}{\tilde{\chi }}_1^0,{\mu }^{+}{\mu }^{-}{\tilde{\chi }}_1^0)$ for an integral luminosity $10f{b}^{-1}$. A discovery potential in the mSUGRA-SUSY scenario with $\tan \beta =10,sign(\mu )=+$ in the $(m_0,m_{1/2})$ plane using the $e^{\pm }{\mu }^{\mp }+E_T^{miss}$ signature is determined.

Comments: 1 latex (20 pages), 9 eps (figures) files