Using the e ^± µ^∓ + E ^miss_T signature in the search for supersymmetry and lepton-flavor violation in neutralino decays

Abstract

The LHC (CMS) discovery potential in the search for supersymmetry and lepton-flavor violation in neutralino decays using the e ^± µ^∓ + E ^miss_T signature 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-flavor violation in neutralino decays with lepton-flavor-violating branching Br($\tilde \chi _2^0$ → µ^± e ^∓ $\tilde \chi _1^0$) ≥ 0.04 Br($\tilde \chi _2^0$ → e ⁺ e ⁻ $\tilde \chi _1^0$, µ⁺ µ⁻ $\tilde \chi _1^0$) for an integral luminosity of 10 fb⁻¹. The discovery potential in the mSUGRA-SUSY scenario with tan β = 10, sgn(µ) = + in the (m ₀, m _1/2) plane using the e ^± µ^∓ + E ^miss_T signature is determined.