Using the e ± µ∓ + E T miss 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 T miss 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 T miss signature is determined.