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Cross-section measurements of the Higgs boson decaying into a pair of τ -leptons in proton-proton collisions at s =13 TeV with the ATLAS detector

M., Aaboud ; Åkesson, T. LU orcid ; Bocchetta, S. LU ; Corrigan, E. LU ; Doglioni, C. LU ; Gregersen, K. LU ; Hansen, E. LU ; Hedberg, V. LU ; Jarlskog, G. LU and Kalderon, C. LU , et al. (2019) In Physical Review D 99(7).
Abstract
A measurement of production cross sections of the Higgs boson in proton-proton collisions is presented in the H→ττ decay channel. The analysis is performed using 36.1 fb-1 of data recorded by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy of s=13 TeV. All combinations of leptonic (τ→vv with =e,μ) and hadronic (τ→hadrons v) τ decays are considered. The H→ττ signal over the expected background from other Standard Model processes is established with an observed (expected) significance of 4.4 (4.1) standard deviations. Combined with results obtained using data taken at 7 and 8 TeV center-of-mass energies, the observed (expected) significance amounts to 6.4 (5.4) standard deviations and constitutes an observation... (More)
A measurement of production cross sections of the Higgs boson in proton-proton collisions is presented in the H→ττ decay channel. The analysis is performed using 36.1 fb-1 of data recorded by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy of s=13 TeV. All combinations of leptonic (τ→vv with =e,μ) and hadronic (τ→hadrons v) τ decays are considered. The H→ττ signal over the expected background from other Standard Model processes is established with an observed (expected) significance of 4.4 (4.1) standard deviations. Combined with results obtained using data taken at 7 and 8 TeV center-of-mass energies, the observed (expected) significance amounts to 6.4 (5.4) standard deviations and constitutes an observation of H→ττ decays. Using the data taken at s=13 TeV, the total cross section in the H→ττ decay channel is measured to be 3.77-0.59+0.60 (stat) -0.74+0.87 (syst) pb, for a Higgs boson of mass 125 GeV assuming the relative contributions of its production modes as predicted by the Standard Model. Total cross sections in the H→ττ decay channel are determined separately for vector-boson-fusion production and gluon-gluon-fusion production to be σH→ττVBF=0.28±0.09 (stat) -0.09+0.11 (syst) pb and σH→ττggF=3.1±1.0 (stat) -1.3+1.6 (syst) pb, respectively. Similarly, results of a fit are reported in the framework of simplified template cross sections. All measurements are in agreement with Standard Model expectations. © 2019 CERN, for the ATLAS Collaboration. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
99
issue
7
article number
072001
publisher
American Physical Society
external identifiers
  • scopus:85065197212
ISSN
2470-0010
DOI
10.1103/PhysRevD.99.072001
language
English
LU publication?
yes
id
de9202ba-f2ce-4f3c-8ee1-b5ee02c8da8f
date added to LUP
2022-04-05 18:44:53
date last changed
2023-04-02 22:44:33
@article{de9202ba-f2ce-4f3c-8ee1-b5ee02c8da8f,
  abstract     = {{A measurement of production cross sections of the Higgs boson in proton-proton collisions is presented in the H→ττ decay channel. The analysis is performed using 36.1 fb-1 of data recorded by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy of s=13 TeV. All combinations of leptonic (τ→vv with =e,μ) and hadronic (τ→hadrons v) τ decays are considered. The H→ττ signal over the expected background from other Standard Model processes is established with an observed (expected) significance of 4.4 (4.1) standard deviations. Combined with results obtained using data taken at 7 and 8 TeV center-of-mass energies, the observed (expected) significance amounts to 6.4 (5.4) standard deviations and constitutes an observation of H→ττ decays. Using the data taken at s=13 TeV, the total cross section in the H→ττ decay channel is measured to be 3.77-0.59+0.60 (stat) -0.74+0.87 (syst) pb, for a Higgs boson of mass 125 GeV assuming the relative contributions of its production modes as predicted by the Standard Model. Total cross sections in the H→ττ decay channel are determined separately for vector-boson-fusion production and gluon-gluon-fusion production to be σH→ττVBF=0.28±0.09 (stat) -0.09+0.11 (syst) pb and σH→ττggF=3.1±1.0 (stat) -1.3+1.6 (syst) pb, respectively. Similarly, results of a fit are reported in the framework of simplified template cross sections. All measurements are in agreement with Standard Model expectations. © 2019 CERN, for the ATLAS Collaboration.}},
  author       = {{M., Aaboud and Åkesson, T. and Bocchetta, S. and Corrigan, E. and Doglioni, C. and Gregersen, K. and Hansen, E. and Hedberg, V. and Jarlskog, G. and Kalderon, C. and Kellermann, E. and Konya, B. and Lytken, E. and Mankinen, K. and Mjörnmark, J. and Poettgen, R. and Poulsen, T. and Smirnova, O. and L., Zwalinski}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{7}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Cross-section measurements of the Higgs boson decaying into a pair of τ -leptons in proton-proton collisions at s =13 TeV with the ATLAS detector}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.99.072001}},
  doi          = {{10.1103/PhysRevD.99.072001}},
  volume       = {{99}},
  year         = {{2019}},
}