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

Publication ,  Journal Article
The ATLAS collaboration; Aad, G; Abbott, B; Abdallah, J; Abdel Khalek, S; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, OS; Abramowicz, H ...
Published in: Journal of High Energy Physics
April 1, 2015
Published version (DOI)

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.]

Duke Scholars

Ayana T. Arce
Author Ayana T. Arce Physics
Alfred T. Goshaw
Author Alfred T. Goshaw Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics
Seog Oh
Author Seog Oh Physics
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Published In

Journal of High Energy Physics

DOI

10.1007/JHEP04(2015)117

EISSN

1029-8479

ISSN

1126-6708

Publication Date

April 1, 2015

Volume

2015

Issue

4

Start / End Page

1 / 74

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

Citation

APA
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MLA
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The ATLAS collaboration, ., Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., … Arnold, H. (2015). Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector. Journal of High Energy Physics, 2015(4), 1–74. https://doi.org/10.1007/JHEP04(2015)117
The ATLAS collaboration, Sina, G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, et al. “Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector.” Journal of High Energy Physics 2015, no. 4 (April 1, 2015): 1–74. https://doi.org/10.1007/JHEP04(2015)117.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdinov O, et al. Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector. Journal of High Energy Physics. 2015 Apr 1;2015(4):1–74.
The ATLAS collaboration, Sina, et al. “Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector.” Journal of High Energy Physics, vol. 2015, no. 4, Apr. 2015, pp. 1–74. Scopus, doi:10.1007/JHEP04(2015)117.
The ATLAS collaboration, Aad G, Abbott B, Abdallah J, Abdel Khalek S, Abdinov O, Aben R, Abi B, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Agatonovic-Jovin T, Aguilar-Saavedra JA, Agustoni M, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimoto G, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Allbrooke BMM, Allison LJ, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Anduaga XS, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Arce ATH, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Arnaez O, Arnal V, Arnold H. Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector. Journal of High Energy Physics. 2015 Apr 1;2015(4):1–74.
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP04(2015)117

EISSN

1029-8479

ISSN

1126-6708

Publication Date

April 1, 2015

Volume

2015

Issue

4

Start / End Page

1 / 74

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics