Speaker
Description
Searches for electroweak supersymmetry are essential in the LHC SUSY program, as the strong SUSY particle mass limits now exceed ~2 TeV. We present a statistical combination of searches for chargino and neutralino production using 139 ifb of proton-proton collisions at a center-of-mass energy of 13 TeV with ATLAS at the LHC. The combination integrates results from multiple final states to enhance the overall sensitivity to electroweak SUSY production. By combining the individual searches, the mass reach for supersymmetric particles is extended by 30 - 100 GeV, and the 95% C.L. cross-section upper limits of the original searches are decreased by 15%-40%. The IHEP SUSY group contributed to the analyses targeting the EWK 1L, SS2L/3L, Ditau final states, which provide crucial sensitivity in the global interpretation.
