Scientific article
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English

Higgs boson production cross-section measurements and their EFT interpretation in the 4ℓ decay channel at √s=13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Errata
  • In the published HTML version of this article, the affiliations of the authors of the National Research Nuclear University MEPhI, Moscow, Russia were unfortunately marked incorrectly.
  • DOI : 10.1140/epjc/s10052-020-08644-x
Publication date2020
First online date2020-10-16
Abstract

Higgs boson properties are studied in the four-lepton decay channel (where lepton = e, $\mu $) using 139 $\hbox {fb}^{-1}$ of proton–proton collision data recorded at $\sqrt{s}=$13 TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive cross-section times branching ratio for $H\rightarrow ZZ^*$ decay is measured to be $1.34 \pm 0.12$ pb for a Higgs boson with absolute rapidity below 2.5, in good agreement with the Standard Model prediction of $1.33 \pm 0.08$ pb. Cross-sections times branching ratio are measured for the main Higgs boson production modes in several exclusive phase-space regions. The measurements are interpreted in terms of coupling modifiers and of the tensor structure of Higgs boson interactions using an effective field theory approach. Exclusion limits are set on the CP-even and CP-odd ‘beyond the Standard Model’ couplings of the Higgs boson to vector bosons, gluons and top quarks.

Keywords
  • P p: colliding beams
  • Higgs particle: hadroproduction
  • Higgs particle: decay modes
  • Z0: pair production
  • Z0: leptonic decay
  • Higgs particle: coupling
  • Higgs particle: interaction
  • P p: scattering
  • Effective field theory
  • Channel cross section: branching ratio: measured
  • ATLAS
  • CERN LHC Coll
  • Vector boson: coupling
  • Coupling constant: upper limit
  • New physics
  • Phase space
  • Structure
  • Rapidity
  • Lepton
  • Gluon
  • Experimental results
  • 13000 GeV-cms
  • S126SZZ
Citation (ISO format)
ATLAS Collaboration. Higgs boson production cross-section measurements and their EFT interpretation in the 4ℓ decay channel at √s=13 TeV with the ATLAS detector. In: European physical journal. C, Particles and fields, 2020, vol. 80, n° 10. doi: 10.1140/epjc/s10052-020-8227-9
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Identifiers
Journal ISSN1434-6044
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