Probing Electroweak Dark Matter at 14 TeV LHC
  Well-motivated electroweak dark matter is often hosted by an extended
electroweak sector which also contains new lepton pairs with masses near the
weak scale. In this paper, we explore such electroweak dark matter via
combining dark matter direct detections and high-luminosity LHC probes of new
lepton pairs. Using $Z$- and $W$-associated electroweak processes with two or
three lepton final states, we show that dependent on the overall coupling
constant, dark matter mass up to $170-210$ GeV can be excluded at $2\sigma$
level and up to $175-205$ GeV can be discovered at $5\sigma$ level at the 14
TeV LHC with integrated luminosities 300 fb$^{-1}$ and 3000 fb$^{-1}$,
respectively.
