Search for dark matter in association with a Higgs boson decaying into a pair of bottom quarks at sqrt(s) = 13 TeV with the CMS detector

A search for the dark matter is performed using events with large missing transverse momentum and a Higgs boson decaying into a pair of bottom quarks in a data sample of proton-proton interactions at the centre-of-mass energy of 13 TeV collected with the CMS detector at the LHC in 2015. The data correspond to an integrated luminosity of 2.3 fb$^{-1}$. Results are interpreted in the framework of the Type-2 two-Higgs-doublet model where a high-mass resonance $\textrm{Z}^{'}$ decays into a pseudoscalar $\textrm{A}_{0}$ and the standard model Higgs boson. $\textrm{A}_{0}$ further decays into a pair of dark matter particles. The recoil of the Higgs boson against the dark matter particles is dependent on the mass of the resonance $m_{\textrm{Z}^{'}}$, therefore, the Higgs boson is reconstructed using a pair of small-radius jets for low transverse momentum and a large-radius jet for high transverse momentum.