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

Research output: Contribution to journalArticle

  • External authors:
  • Agni Bethani
  • Alexander Bitadze
  • Jonathan Crane
  • Cinzia Da Via
  • Nicholas Dann
  • Sam Dysch
  • Alessandra Forti
  • Emily Hanson
  • James Howarth
  • David Lack
  • Ivan Lopez Paz
  • Jiri Masik
  • Stephen Menary
  • Francisca Munoz Sanchez
  • Alexander Oh
  • Joleen Pater
  • Yvonne Peters
  • Rebecca Pickles
  • Yang Qin
  • Jacob Rawling
  • Nicolas Scharmberg
  • Savanna Shaw
  • Terence Wyatt

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(ℓℓ)H, and W/Z(had)H, all performed with the ATLAS detector using 36.1fb−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 ( 0.1 7 + 0.07−0.05) at 95% confidence level is observed (expected).

Bibliographical metadata

Original languageEnglish
JournalPhysical Review Letters
Early online date13 Jun 2019
DOIs
Publication statusPublished - 2019