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Scientific article
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English

Measurements of Higgs boson production cross-sections in the H → τ+τ decay channel in pp collisions at √s = 13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2022, no. 8, 175
Publication date2022
First online date2022-08-18
Abstract

Measurements of the production cross-sections of the Standard Model (SM) Higgs boson (H) decaying into a pair of τ-leptons are presented. The measurements use data collected with the ATLAS detector from pp collisions produced at the Large Hadron Collider at a centre-of-mass energy of $ \sqrt{s} $ = 13 TeV, corresponding to an integrated luminosity of 139 fb$^{−1}$. Leptonic (τ → ℓν$_{ℓ}$ν$_{τ}$) and hadronic (τ → hadrons ν$_{τ}$) decays of the τ-lepton are considered. All measurements account for the branching ratio of H → ττ and are performed with a requirement |y$_{H}$| < 2.5, where y$_{H}$ is the true Higgs boson rapidity. The cross-section of the pp → H → ττ process is measured to be 2.94 ±$ 0.21{\left(\mathrm{stat}\right)}_{-0.32}^{+0.37} $(syst) pb, in agreement with the SM prediction of 3.17 ± 0.09 pb. Inclusive cross-sections are determined separately for the four dominant production modes: 2.65 ±$ 0.41{\left(\mathrm{stat}\right)}_{-0.67}^{+0.91} $(syst) pb for gluon-gluon fusion, 0.197 ±$ 0.028{\left(\mathrm{stat}\right)}_{-0.026}^{+0.032} $(syst) pb for vector-boson fusion, 0.115 ±$ 0.058{\left(\mathrm{stat}\right)}_{-0.040}^{+0.042} $(syst) pb for vector-boson associated production, and 0.033 ±$ 0.031{\left(\mathrm{stat}\right)}_{-0.017}^{+0.022} $(syst) pb for top-quark pair associated production. Measurements in exclusive regions of the phase space, using the simplified template cross-section framework, are also performed. All results are in agreement with the SM predictions.

eng
Keywords
  • Hadron-Hadron Scattering
  • Higgs Physics
  • Tau Physics
  • P p: scattering
  • P p: colliding beams
  • Vector boson: associated production
  • P p: cross section
  • Gluon: fusion
  • Vector boson: fusion
  • Higgs particle: hadroproduction
  • Gluon gluon: fusion
  • Top: pair production
  • Higgs particle: associated production
  • Higgs particle: leptonic decay
  • Tau: pair production
  • Tau: decay modes
  • Higgs particle: rapidity
  • ATLAS
  • Branching ratio
  • CERN LHC Coll
  • Phase space
  • Channel cross section: measured
  • Data analysis method
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Measurements of Higgs boson production cross-sections in the <i>H</i> → τ<sup>+</sup>τ<sup>−</sup> decay channel in <i>pp</i> collisions at √s = 13 TeV with the ATLAS detector. In: The journal of high energy physics, 2022, vol. 2022, n° 8, p. 175. doi: 10.1007/jhep08(2022)175
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ISSN of the journal1029-8479
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