Search for resonant and non-resonant Higgs boson pair production in the $ b\overline{b}{\tau}^{+}{\tau}^{-} $ decay channel using 13 TeV pp collision data from the ATLAS detector

A search for Higgs boson pair production in events with two b-jets and two τ-leptons is presented, using a proton–proton collision dataset with an integrated luminosity of 139 fb

^{−1}

collected at

\sqrt{s}

= 13 TeV by the ATLAS experiment at the LHC. Higgs boson pairs produced non-resonantly or in the decay of a narrow scalar resonance in the mass range from 251 to 1600 GeV are targeted. Events in which at least one τ-lepton decays hadronically are considered, and multivariate discriminants are used to reject the backgrounds. No significant excess of events above the expected background is observed in the non-resonant search. The largest excess in the resonant search is observed at a resonance mass of 1 TeV, with a local (global) significance of 3.1σ (2.0σ). Observed (expected) 95% confidence-level upper limits are set on the non-resonant Higgs boson pair-production cross-section at 4.7 (3.9) times the Standard Model prediction, assuming Standard Model kinematics, and on the resonant Higgs boson pair-production cross-section at between 21 and 900 fb (12 and 840 fb), depending on the mass of the narrow scalar resonance.[graphic not available: see fulltext]

Note:

59 pages in total, author list starting page 42, 10 figures, 6 tables, published in JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2018-40

Higgs Physics
Hadron-Hadron Scattering
Proton-Proton Scattering
p p: colliding beams
resonance: production
narrow resonance
Higgs particle: pair production
resonance: scalar
p p: scattering
Higgs particle: decay modes

References(174)

Figures(27)

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 716 (2012) 1-29
•
e-Print:
- 1207.7214
•
DOI:
- 10.1016/j.physletb.2012.08.020

Observation of a New Boson at a Mass of 125 GeV with the CMS Experiment at the LHC

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 716 (2012) 30-61
•
e-Print:
- 1207.7235
•
DOI:
- 10.1016/j.physletb.2012.08.021

The ATLAS Experiment at the CERN Large Hadron Collider

ATLAS

Collaboration

•

G. Aad
(
- Marseille, CPPM
)

et al.

- JINST 3 (2008) S08003
•
DOI:
- 10.1088/1748-0221/3/08/S08003

The CMS Experiment at the CERN LHC

CMS

Collaboration

•

S. Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JINST 3 (2008) S08004
•
DOI:
- 10.1088/1748-0221/3/08/S08004

LHC Machine

Lyndon Evans
(
- CERN
)
(ed.)
,
Philip Bryant
(
- CERN
)
(ed.)

- JINST 3 (2008) S08001
•
DOI:
- 10.1088/1748-0221/3/08/S08001

Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Eur.Phys.J.C 75 (2015) 10, 476,
- Eur.Phys.J.C 76 (2016) 3, 152 (erratum)
•
e-Print:
- 1506.05669
•
DOI:
- 10.1140/epjc/s10052-015-3685-1

$CP$ Properties of Higgs Boson Interactions with Top Quarks in the $t\bar{t}H$ and $tH$ Processes Using $H \rightarrow \gamma\gamma$ with the ATLAS Detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.Lett. 125 (2020) 6, 061802
•
e-Print:
- 2004.04545
•
DOI:
- 10.1103/PhysRevLett.125.061802

Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 110 (2013) 8, 081803
•
e-Print:
- 1212.6639
•
DOI:
- 10.1103/PhysRevLett.110.081803

Constraints on anomalous Higgs boson couplings to vector bosons and fermions in its production and decay using the four-lepton final state

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 104 (2021) 5, 052004
•
e-Print:
- 2104.12152
•
DOI:
- 10.1103/PhysRevD.104.052004

Constraints on off-shell Higgs boson production and the Higgs boson total width in $ZZ\to4\ell$ and $ZZ\to2\ell2\nu$ final states with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Lett.B 786 (2018) 223-244
•
e-Print:
- 1808.01191
•
DOI:
- 10.1016/j.physletb.2018.09.048

Measurements of the Higgs boson width and anomalous $HVV$ couplings from on-shell and off-shell production in the four-lepton final state

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 99 (2019) 11, 112003
•
e-Print:
- 1901.00174
•
DOI:
- 10.1103/PhysRevD.99.112003

A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Nature 607 (2022) 7917, 52-59,
- Nature 612 (2022) 7941, E24 (erratum)
•
e-Print:
- 2207.00092
•
DOI:
- 10.1038/s41586-022-04893-w

A portrait of the Higgs boson by the CMS experiment ten years after the discovery.

CMS

Collaboration

•

Armen Tumasyan
(
- Tbilisi, Inst. Phys.
)

et al.

- Nature 607 (2022) 7917, 60-68,
- Nature 623 (2023) 7985, E4 (erratum)
•
e-Print:
- 2207.00043
•
DOI:
- 10.1038/s41586-022-04892-x

Neutral Higgs boson pair production at hadron colliders: QCD corrections

- Phys.Rev.D 58 (1998) 115012
•
e-Print:
- hep-ph/9805244
•
DOI:
- 10.1103/PhysRevD.58.115012

Higgs Boson Pair Production in Gluon Fusion at Next-to-Leading Order with Full Top-Quark Mass Dependence

S. Borowka
(
- Santa Barbara, KITP and
- Zurich U.
)
,
N. Greiner
(
- Zurich U.
)
,
G. Heinrich
(
- Munich, Max Planck Inst.
)
,
S.P. Jones
(
- Munich, Max Planck Inst.
)
,
M. Kerner
(
- Munich, Max Planck Inst.
)

et al.

- Phys.Rev.Lett. 117 (2016) 1, 012001,
- Phys.Rev.Lett. 117 (2016) 7, 079901 (erratum)
•
e-Print:
- 1604.06447
•
DOI:
- 10.1103/PhysRevLett.117.079901