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

The, ATLAS collaboration
•
Aad, G.
•
Abbott, B.
altro
Zinonos, Z.
2015
  • journal article

Periodico
JOURNAL OF HIGH ENERGY PHYSICS
Abstract
Results of a search for H -> tau tau 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 root s = 7TeV and root s = 8 TeV respectively. All combinations of leptonic (tau -> l nu(nu) over bar with l = e, mu) and hadronic (tau -> hadrons nu) 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 mu = 1.43(-0.37)(+0.43) is consistent with the predicted Yukawa coupling strength in the Standard Model.
DOI
10.1007/JHEP04(2015)117
WOS
WOS:000353557400001
Archivio
http://hdl.handle.net/11390/1097277
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84928736502
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928736502&partnerID=40&md5=3b14bfef4ecc71e1e8035c6c23d95f71
Diritti
metadata only access
Soggetti
  • Hadron-Hadron Scatter...

  • Nuclear and High Ener...

Web of Science© citazioni
189
Data di acquisizione
Mar 26, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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