Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector - INSPIRE

DataBETA

Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector

ATLAS

Collaboration

Jun 1, 2018

19 pages

Published in:

Phys.Lett.B 784 (2018) 173-191

Published: Sep 10, 2018

e-Print:

1806.00425 [hep-ex]

DOI:

10.1016/j.physletb.2018.07.035 (publication)

PDG:

{{\mathit t}}{{\overline{\mathit t}}}{{\mathit H}}

Production Cross Section in

{{\mathit p}}{{\mathit p}}

\sqrt {s }

Report number:

CERN-EP-2018-138

Experiments:

CERN-LHC-ATLAS

View in:

reference search691 citations

Citations per year

Abstract: (Elsevier)

The observation of Higgs boson production in association with a top quark pair ( tt¯H ), based on the analysis of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider, is presented. Using data corresponding to integrated luminosities of up to 79.8 fb −1 , and considering Higgs boson decays into bb¯ , WW⁎ , τ+τ− , γγ , and ZZ⁎ , the observed significance is 5.8 standard deviations, compared to an expectation of 4.9 standard deviations. Combined with the tt¯H searches using a dataset corresponding to integrated luminosities of 4.5 fb −1 at 7 TeV and 20.3 fb −1 at 8 TeV, the observed (expected) significance is 6.3 (5.1) standard deviations. Assuming Standard Model branching fractions, the total tt¯H production cross section at 13 TeV is measured to be 670 ± 90 (stat.) −100+110 (syst.) fb, in agreement with the Standard Model prediction.

Note:

34 pages in total, author list starting page 18, 6 figures, 3 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-13

p p: scattering
p p: colliding beams
top: pair production
Higgs particle: associated production
Higgs particle: decay modes
bottom: pair production
W: pair production
Z0: pair production
tau: pair production
photon: pair production

References(45)

Figures(7)

[1]

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

[2]

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

[3]

Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at $\sqrt{s}=7$ and 8 TeV

ATLAS and
CMS

Collaborations

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- JHEP 08 (2016) 045
•
e-Print:
- 1606.02266
•
DOI:
- 10.1007/JHEP08(2016)045

[4]

Evidence for the $H\to b\overline{b}$ decay with the ATLAS detector

ATLAS

Collaboration

•

M. Aaboud
(
- Oujda U.
)

et al.

- JHEP 12 (2017) 024
•
e-Print:
- 1708.03299
•
DOI:
- 10.1007/JHEP12(2017)024

[5]

Measurement of the Higgs boson coupling properties in the $H\rightarrow ZZ^{*} \rightarrow 4\ell$ decay channel at $\sqrt{s}$ = 13 TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 03 (2018) 095
•
e-Print:
- 1712.02304
•
DOI:
- 10.1007/JHEP03(2018)095

[6]

Measurements of Higgs boson properties in the diphoton decay channel with 36 fb $^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Rev.D 98 (2018) 052005
•
e-Print:
- 1802.04146
•
DOI:
- 10.1103/PhysRevD.98.052005

[7]

Observation of the Higgs boson decay to a pair of $\tau$ leptons with the CMS detector

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 779 (2018) 283-316
•
e-Print:
- 1708.00373
•
DOI:
- 10.1016/j.physletb.2018.02.004

[8]

Evidence for the Higgs boson decay to a bottom quark–antiquark pair

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 780 (2018) 501-532
•
e-Print:
- 1709.07497
•
DOI:
- 10.1016/j.physletb.2018.02.050

[9]

Luminosity determination in pp collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector at the LHC

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Eur.Phys.J.C 76 (2016) 12, 653
•
e-Print:
- 1608.03953
•
DOI:
- 10.1140/epjc/s10052-016-4466-1

[10]

Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Rev.D 97 (2018) 7, 072003
•
e-Print:
- 1712.08891
•
DOI:
- 10.1103/PhysRevD.97.072003

[11]

Observation of $\mathrm{t\overline{t}}$ H production

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.Lett. 120 (2018) 23, 231801
•
e-Print:
- 1804.02610
•
DOI:
- 10.1103/PhysRevLett.120.231801

[12]

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

[13]

ATLAS Insertable B-Layer Technical Design Report Addendum

ATLAS

Collaboration

[14]

Electron and photon reconstruction and performance in ATLAS using a dynamical, topological cell clustering-based approach

ATLAS

Collaboration

[15]

Search for the standard model Higgs boson produced in association with top quarks and decaying into a $b\bar{b}$ pair in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Rev.D 97 (2018) 7, 072016
•
e-Print:
- 1712.08895
•
DOI:
- 10.1103/PhysRevD.97.072016

[16]

Measurements of the Higgs boson production and decay rates and coupling strengths using pp collision data at $\sqrt{s}=7$ and 8 TeV in the ATLAS experiment

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Eur.Phys.J.C 76 (2016) 1, 6
•
e-Print:
- 1507.04548
•
DOI:
- 10.1140/epjc/s10052-015-3769-y

[17]

Search for the Standard Model Higgs boson decaying into $b\overline{b}$ produced in association with top quarks decaying hadronically in pp collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- JHEP 05 (2016) 160
•
e-Print:
- 1604.03812
•
DOI:
- 10.1007/JHEP05(2016)160

[18]

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into $b\bar{b}$ in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Eur.Phys.J.C 75 (2015) 7, 349
•
e-Print:
- 1503.05066
•
DOI:
- 10.1140/epjc/s10052-015-3543-1

[19]

Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Lett.B 749 (2015) 519-541
•
e-Print:
- 1506.05988
•
DOI:
- 10.1016/j.physletb.2015.07.079

[20]

Search for $H \to \gamma\gamma$ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Lett.B 740 (2015) 222-242
•
e-Print:
- 1409.3122
•
DOI:
- 10.1016/j.physletb.2014.11.049

[21]

Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments

ATLAS and
CMS

Collaborations

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.Lett. 114 (2015) 191803
•
e-Print:
- 1503.07589
•
DOI:
- 10.1103/PhysRevLett.114.191803

[22]

Performance of $b$ -Jet Identification in the ATLAS Experiment

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- JINST 11 (2016) 04, P04008
•
e-Print:
- 1512.01094
•
DOI:
- 10.1088/1748-0221/11/04/P04008

[23]

Expected performance of the ATLAS $b$ -tagging algorithms in Run-2

ATLAS

Collaboration

[24]

Measurements of b-jet tagging efficiency with the ATLAS detector using $t\overline{t}$ events at $\sqrt{s}=13$ TeV

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 08 (2018) 089
•
e-Print:
- 1805.01845
•
DOI:
- 10.1007/JHEP08(2018)089

[25]

XGBoost: A Scalable Tree Boosting System

e-Print:
- 1603.02754
•
DOI:
- 10.1145/2939672.2939785

1-25 of 45
1
2
25 / page