Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector

The ATLAS Collaboration

研究成果: Article査読

133 被引用数 (Scopus)

抄録

Abstract: Results of a search for H → ττ decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb−1 and 20.3 fb−1 at centre-of-mass energies of √s = 7 TeV and √s = 8 TeV respectively. All combinations of leptonic (τ→ℓνν¯ with ℓ = e, μ) and hadronic (τ → hadrons ν) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of μ = 1. 43− 0.37+ 0.43 is consistent with the predicted Yukawa coupling strength in the Standard Model.[Figure not available: see fulltext.]

本文言語English
論文番号117
ページ(範囲)1-74
ページ数74
ジャーナルJournal of High Energy Physics
2015
4
DOI
出版ステータスPublished - 2015 4 1

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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