"2D exclusion contour, vector, Expected plus 1 s.d." of "Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$"

Expected plus 1 s.d. exclusion contour in the $m_{med}$-$m_{\chi}$ plane in the simplified model with vector couplings.在带有矢量耦合（vector couplings）的简化模型中，$m_{ ext{med}}$-$m_{chi}$平面内的预期+1σ排除等高线