University of Sussex
Browse
10-1007-JHEP04(2015)117.pdf (1.38 MB)

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

Download (1.38 MB)
journal contribution
posted on 2023-06-08, 22:32 authored by Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, Alessandro CerriAlessandro Cerri, Iacopo Vivarelli, Lily AsquithLily Asquith, Benedict AllbrookeBenedict Allbrooke, Carlos Chavez Barajas, Itzebelt Santoyo Castillo, Tina Potter, Kerim Suruliz, Mark SuttonMark Sutton, and others (ATLAS collaboration)
Results of a search for H ? t t 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 vs = 7 TeV and vs = 8 TeV respectively. All combinations of leptonic (t ? `??¯ with ` = e, µ) and hadronic (t ? hadrons ?) 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 +0.43 -0.37 is consistent with the predicted Yukawa coupling strength in the Standard Model.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1029-8479

Publisher

Springer Verlag

Issue

117

Volume

2015

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-09-16

First Open Access (FOA) Date

2015-09-16

First Compliant Deposit (FCD) Date

2015-09-16

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC