Search for invisible Higgs boson decays in vector boson fusion at root s=13 TeV with the ATLAS detectorShow others and affiliations
Number of Authors: 29062019 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 793, p. 499-519
Article in journal (Refereed) Published
Abstract [en]
We report a search for Higgs bosons that are produced via vector boson fusion and subsequently decay into invisible particles. The experimental signature is an energetic jet pair with invariant mass of O(1) TeVand O(100) GeVmissing transverse momentum. The analysis uses 36.1 fb(-1) of pp collision data at root s = 13 TeV recorded by the ATLAS detector at the LHC. In the signal region the 2252 observed events are consistent with the background estimation. Assuming a 125 GeV scalar particle with Standard Model cross sections, the upper limit on the branching fraction of the Higgs boson decay into invisible particles is 0.37 at 95% confidence level where 0.28 was expected. This limit is interpreted in Higgs portal models to set bounds on the wimp-nucleon scattering cross section. We also consider invisible decays of additional scalar bosons with masses up to 3 TeV for which the upper limits on the cross section times branching fraction are in the range of 0.3-1.7 pb.
Place, publisher, year, edition, pages
2019. Vol. 793, p. 499-519
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-170080DOI: 10.1016/j.physletb.2019.04.024ISI: 000470064800072OAI: oai:DiVA.org:su-170080DiVA, id: diva2:1335801
2019-07-082019-07-082022-03-23Bibliographically approved