Light higgsino-dominated NLSPs in semi-constrained NMSSM

In the semi-constrained next-to minimal supersymmetric standard model(scNMSSM,or NMSSM with non-universal Higgs mass)under current constraints,we consider a scenario where h2 is the SM-like Higgs,■1^0 is a singlino-dominated LSP;■1^± and ■2,3^0 are mass-degenerated,light,and higgsino-dominated next-to-lightest supersymmetric particles(NLSPs).We investigate the constraints of these NLSPs by searching for supersymmetry particles at the LHC Run-I and Run-I and discuss the possibility of discovering these NLSPs in the future.We arrive at the following conclusions:(i)With all data of Run I and up to 36 fb-1 data of Run I at the LHC,the search results by AT-LAS and CMS still cannot exclude the higgsino-dominated NLSPs of 100~200 GeV.(ii)When the mass difference with ■1^0 is smaller than ■2^0,■ and ■3^0 have opposite preferences with regard to decaying to Z/Z^* or h1.(iii)When the mass difference between NLSP and LSP is larger than mZ,most samples can be verified at the 5σ level with future 300 fb^-1 data at the LHC.Meanwhile,with 3000 fb^-1 data at high-luminosity LHC(HL-LHC),almost all of the samples can be verified at the 5σ level,even if the mass difference is insufficient.(iv)The a1 funnel and the h2/Z funnel mechanisms for the singlino-dominated LSP annihilation cannot be distinguished by searching for NLSPs.