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Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H→invisible decays where H is produced according to the standard model via vector boson fusion, Z (ℓℓ) H, and W/Z (had) H, all performed with the ATLAS detector using 36. 1 fb^-1 of pp collisions at a center-of-mass energy of sqrts=13 TeV at the LHC. In combination with the results at sqrts=7 and 8 TeV, an exclusion limit on the H→invisible branching ratio of 0. 26 (0. 17-₀. ₀₅^+0. 07) at 95% confidence level is observed (expected).
Aaboud et al. (Thu,) studied this question.