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Catarina Doglioni

Caterina Doglioni

Affiliated

Catarina Doglioni

Search for invisible Higgs boson decays in vector boson fusion at s=13TeV with the ATLAS detector

Author

  • Aaboud M.
  • T. Åkesson
  • S. Bocchetta
  • E. Corrigan
  • C. Doglioni
  • E. Hansen
  • V. Hedberg
  • G. Jarlskog
  • C. Kalderon
  • E. Kellermann
  • B. Konya
  • E. Lytken
  • K. Mankinen
  • J. Mjörnmark
  • R. Poettgen
  • T. Poulsen
  • O. Smirnova
  • Zwalinski L.

Summary, in English

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)TeV and O(100)GeV missing transverse momentum. The analysis uses 36.1 fb−1 of pp collision data at s=13TeV recorded by the ATLAS detector at the LHC. In the signal region the 2252 observed events are consistent with the background estimation. Assuming a 125GeV 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 3TeV for which the upper limits on the cross section times branching fraction are in the range of 0.3–1.7pb. © 2019 The Author(s)

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration

Publishing year

2019

Language

English

Pages

499-519

Publication/Series

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

793

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0370-2693