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

Summary, in English

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.

• Author: Aaboud M.; T. Åkesson; S. Bocchetta; L. Bryngemark; E. Corrigan; C. Doglioni; K. Gregersen; E. Hansen; V. Hedberg; G. Jarlskog; C. Kalderon; E. Kellermann; B. Konya; E. Lytken; K. Mankinen; C. Marcon; J. Mjörnmark; G. Mullier; R. Poettgen; T. Poulsen; E. Skorda; O. Smirnova; Zwalinski L.
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration
• Publishing year: 2019
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 122
• Issue: 23
• Links: http://dx.doi.org/10.1103/PhysRevLett.122.231801
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Keywords: Tellurium compounds; ATLAS detectors; ATLAS experiment; Branching ratio; Confidence levels; Dark matter particles; Higgs Boson decay; The standard model; Vector boson; Bosons; article; boson
• Status: Published
• ISBN/ISSN/Other: ISSN: 0031-9007