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Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment

Research output: Contribution to journalJournal articlepeer-review

Published
Article number231801
<mark>Journal publication date</mark>13/06/2019
<mark>Journal</mark>Physical review letters
Issue number23
Volume122
Number of pages20
Publication StatusPublished
<mark>Original language</mark>English

Abstract

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(-)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 s=13 TeV at the LHC. In combination with the results at s=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). © 2019 CERN.