Measurement of jet activity produced in top-quark events with an electron, a muon and two $b$-tagged jets in the final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector - INSPIRE

DataBETA

Measurement of jet activity produced in top-quark events with an electron, a muon and two $b$ -tagged jets in the final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS

Collaboration

Oct 31, 2016

57 pages

Published in:

Eur.Phys.J.C 77 (2017) 4, 220

Published: Apr 7, 2017

e-Print:

1610.09978 [hep-ex]

DOI:

10.1140/epjc/s10052-017-4766-0

Report number:

CERN-EP-2016-218

Experiments:

CERN-LHC-ATLAS

View in:

reference search48 citations

Citations per year

Abstract: (Springer)

Measurements of jet activity in top-quark pair events produced in proton–proton collisions are presented, using 3.2 fb

^{-1}

of pp collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment at the Large Hadron Collider. Events are chosen by requiring an opposite-charge

e\mu

pair and two b-tagged jets in the final state. The normalised differential cross-sections of top-quark pair production are presented as functions of additional-jet multiplicity and transverse momentum,

p_{\text {T}}

. The fraction of signal events that do not contain additional jet activity in a given rapidity region, the gap fraction, is measured as a function of the

p_{\text {T}}

threshold for additional jets, and is also presented for different invariant mass regions of the

e\mu b\bar{b}

system. All measurements are corrected for detector effects and presented as particle-level distributions compared to predictions with different theoretical approaches for QCD radiation. While the kinematics of the jets from top-quark decays are described well, the generators show differing levels of agreement with the measurements of observables that depend on the production of additional jets.

Note:

57 pages in total, author list starting page 41, 16 figures, 15 tables, submitted to EPJC, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-17

p p: scattering
p p: colliding beams
top: pair production
top: decay
bottom: pair production
bottom: particle identification
quantum chromodynamics: radiation
ATLAS
differential cross section
transverse momentum dependence

References(59)

Figures(31)

[1]

Measurement of the top quark mass in the $t\bar{t}\to$ dilepton channel from $\sqrt{s}=8$ TeV ATLAS data

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Lett.B 761 (2016) 350-371
•
e-Print:
- 1606.02179
•
DOI:
- 10.1016/j.physletb.2016.08.042

[2]

Measurement of the $t\bar{t}$ production cross-section using $e\mu$ events with b-tagged jets in pp collisions at $\sqrt{s}$ =13 TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- Phys.Lett.B 761 (2016) 136-157,
- Phys.Lett.B 772 (2017) 879-879 (erratum)
•
e-Print:
- 1606.02699
•
DOI:
- 10.1016/j.physletb.2016.08.019

[3]

Measurement of $t \bar{t}$ production with a veto on additional central jet activity in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 72 (2012) 2043
•
e-Print:
- 1203.5015
•
DOI:
- 10.1140/epjc/s10052-012-2043-9

[4]

Measurement of jet activity in top quark events using the $e\mu$ final state with two $b$ -tagged jets in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 09 (2016) 074
•
e-Print:
- 1606.09490
•
DOI:
- 10.1007/JHEP09(2016)074

[5]

Measurement of the $t\overline{t}$ production cross-section as a function of jet multiplicity and jet transverse momentum in 7 TeV proton-proton collisions with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- JHEP 01 (2015) 020
•
e-Print:
- 1407.0891
•
DOI:
- 10.1007/JHEP01(2015)020

[6]

Simulation of top quark production for the ATLAS experiment at sqrt(s) = 13 TeV

ATLAS

Collaboration

[7]

Comparison of Monte Carlo generator predictions from Powheg and Sherpa to ATLAS measurements of top pair production at 7 TeV

ATLAS

Collaboration

[8]

Comparison of Monte Carlo generator predictions to ATLAS measurements of top pair production at 7 TeV

ATLAS

Collaboration

[9]

Measurement of differential cross sections for top quark pair production using the lepton+jets final state in proton-proton collisions at 13 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 95 (2017) 9, 092001
•
e-Print:
- 1610.04191
•
DOI:
- 10.1103/PhysRevD.95.092001

[10]

Measurement of $\mathrm {t}\overline{\mathrm {t}}$ production with additional jet activity, including $\mathrm {b}$ quark jets, in the dilepton decay channel using pp collisions at $\sqrt{s} =$ 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 76 (2016) 7, 379
•
e-Print:
- 1510.03072
•
DOI:
- 10.1140/epjc/s10052-016-4105-x

[11]

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

[12]

ATLAS Design Report, ATLAS-TDR-19,, url:

ATLAS Collaboration

Collaboration

•

Insertable B-Layer Technical

for the collaboration.

[13]

Performance of the ATLAS Trigger System in 2010

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 72 (2012) 1849
•
e-Print:
- 1110.1530
•
DOI:
- 10.1140/epjc/s10052-011-1849-1

[14]

start-up trigger menu and initial performance assessment of the ATLAS trigger using Run-2 data, ATL-DAQ-PUB-2016-001, url:

ATLAS Collaboration

Collaboration

[15]

A New method for combining NLO QCD with shower Monte Carlo algorithms

Paolo Nason
(
- INFN, Milan
)

- JHEP 11 (2004) 040
•
e-Print:
- hep-ph/0409146
•
DOI:
- 10.1088/1126-6708/2004/11/040

[16]

Matching NLO QCD computations with Parton Shower simulations: the POWHEG method

Stefano Frixione
(
- INFN, Genoa
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- INFN, Milan Bicocca and
- Milan Bicocca U.
)

- JHEP 11 (2007) 070
•
e-Print:
- 0709.2092
•
DOI:
- 10.1088/1126-6708/2007/11/070

[17]

A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX

Simone Alioli
(
- DESY, Zeuthen and
- INFN, Milan Bicocca
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)
,
Emanuele Re
(
- Durham U., IPPP and
- INFN, Milan Bicocca
)

- JHEP 06 (2010) 043
•
e-Print:
- 1002.2581
•
DOI:
- 10.1007/JHEP06(2010)043

[18]

PYTHIA 6.4 Physics and Manual

Torbjorn Sjostrand
(
- Lund U., Dept. Theor. Phys.
)
,
Stephen Mrenna
(
- Fermilab
)
,
Peter Z. Skands
(
- Fermilab
)

- JHEP 05 (2006) 026
•
e-Print:
- hep-ph/0603175
•
DOI:
- 10.1088/1126-6708/2006/05/026

[19]

New parton distributions for collider physics

Hung-Liang Lai
(
- Michigan State U. and
- Taipei Municipal U. of Education
)
,
Marco Guzzi
(
- Southern Methodist U.
)
,
Joey Huston
(
- Michigan State U.
)
,
Zhao Li
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Southern Methodist U.
)

et al.

- Phys.Rev.D 82 (2010) 074024
•
e-Print:
- 1007.2241
•
DOI:
- 10.1103/PhysRevD.82.074024

[20]

Inclusive jet production, parton distributions, and the search for new physics

Daniel Stump
(
- Michigan State U.
)
,
Joey Huston
(
- Michigan State U.
)
,
Jon Pumplin
(
- Michigan State U.
)
,
Wu-Ki Tung
(
- Michigan State U.
)
,
H.L. Lai
(
- Michigan State U. and
- Taipei Municipal U. of Education
)

et al.

- JHEP 10 (2003) 046
•
e-Print:
- hep-ph/0303013
•
DOI:
- 10.1088/1126-6708/2003/10/046

[21]

Tuning Monte Carlo Generators: The Perugia Tunes

Peter Zeiler Skands
(
- CERN
)

- Phys.Rev.D 82 (2010) 074018
•
e-Print:
- 1005.3457
•
DOI:
- 10.1103/PhysRevD.82.074018

[22]

Measurements of normalized differential cross sections for $t\bar{t}$ production in pp collisions at $\sqrt{s}=7$ TeV using the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.D 90 (2014) 7, 072004
•
e-Print:
- 1407.0371
•
DOI:
- 10.1103/PhysRevD.90.072004

[23]

The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

J. Alwall
(
- Taiwan, Natl. Taiwan U.
)
,
R. Frederix
(
- CERN
)
,
S. Frixione
(
- CERN
)
,
V. Hirschi
(
- SLAC
)
,
F. Maltoni
(
- Louvain U., CP3
)

et al.

- JHEP 07 (2014) 079
•
e-Print:
- 1405.0301
•
DOI:
- 10.1007/JHEP07(2014)079

[24]

Herwig++ Physics and Manual

et al.

- Eur.Phys.J.C 58 (2008) 639-707
•
e-Print:
- 0803.0883
•
DOI:
- 10.1140/epjc/s10052-008-0798-9

[25]

Herwig 7.0/Herwig++ 3.0 release note

Johannes Bellm
(
- KIT, Karlsruhe, TP and
- Durham U., IPPP and
- Durham U.
)
,
Stefan Gieseke
(
- KIT, Karlsruhe, TP
)
,
David Grellscheid
(
- Durham U., IPPP and
- Durham U.
)
,
Simon Plätzer
(
- Durham U. and
- Durham U., IPPP and
- Manchester U.
)
,
Michael Rauch
(
- KIT, Karlsruhe, TP
)

et al.

- Eur.Phys.J.C 76 (2016) 4, 196
•
e-Print:
- 1512.01178
•
DOI:
- 10.1140/epjc/s10052-016-4018-8

1-25 of 59
1
2
3
25 / page