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

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 = 7TeV and √s = 8TeV...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Exactas
Física
hadron-hadron scattering
Yukawa coupling
ATLAS experiment
Higgs boson
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79102
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79102
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
hadron-hadron scattering
Yukawa coupling
ATLAS experiment
Higgs boson
spellingShingle Ciencias Exactas
Física
hadron-hadron scattering
Yukawa coupling
ATLAS experiment
Higgs boson
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
topic_facet Ciencias Exactas
Física
hadron-hadron scattering
Yukawa coupling
ATLAS experiment
Higgs boson
description 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 = 7TeV and √s = 8TeV respectively. All combinations of leptonic (τ → ℓv¯v with ℓ = e, μ) and hadronic (τ → hadrons v) 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.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
author_sort Alconada Verzini, María Josefina
title Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
title_short Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
title_full Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
title_fullStr Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
title_full_unstemmed Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
title_sort evidence for the higgs-boson yukawa coupling to tau leptons with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/79102
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