Light Singlino Dark Matter at the LHC

Abstract

The light singlino-like neutralino is expected to be a promising candidate for DM in the allowed parameter space of the NMSSM. The DM annihilation process takes place via the light Higgs bosons which are natural in this model. Identifying the allowed region of parameter space including various constraints, the detection prospect of such light DM candidate and Higgs bosons are explored at the LHC with its high luminosity options. Light Higgs bosons and the DM candidate, the lightest singlino-like neutralino are indirectly produced at the LHC via the SM Higgs production and its subsequent decays. Jet substructure techniques are used to tag boosted Higgs. It is found that the favourable range of masses of Higgs bosons and neutralino, compatible with a low mass DM solution, can be discovered with a reasonable signal significance ($\sim 5\sigma$) at the LHC, with the center of mass energy $\sqrt{s}=14$ TeV and integrated luminosity options $\mathcal{L}=300\mathrm{f}{\mathrm{b}}^{-1}$ and 3000 $\mathrm{f}{\mathrm{b}}^{-1}$.

arXiv comment37 pages, 6 figures, 5 tables; minor changes made in the content, added more information to a table, added few references. To be published in Physical Review D

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