A search for $t\bar{t}$ resonances with the ATLAS detector in 2.05 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}=7$ TeV - INSPIRE

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A search for $t\bar{t}$ resonances with the ATLAS detector in 2.05 fb $^{-1}$ of proton-proton collisions at $\sqrt{s}=7$ TeV

ATLAS

Collaboration

May, 2012

25 pages

Published in:

Eur.Phys.J.C 72 (2012) 2083

Published: Jul 26, 2012

e-Print:

1205.5371 [hep-ex]

DOI:

10.1140/epjc/s10052-012-2083-1

PDG: Limits for other

{{\mathit Z}^{\,'}}

Report number:

CERN-PH-EP-2012-122

Experiments:

CERN-LHC-ATLAS

View in:

reference search64 citations

Citations per year

Abstract: (arXiv)

A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb^-1, which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to ttbar for narrow and wide resonances. For narrow Z' bosons, the observed 95% credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of m_Z' = 500 GeV to m_Z' = 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z' boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is m_Z' < 880 GeV (m_{g_KK} < 1130 GeV).

Note:

11 pages plus author list (25 pages total), 6 figures, 5 tables, matches published EPJC version

12.60.Nz
14.80.Rt
top: pair production
excited state
Z': mass
gluon: Kaluza-Klein
Randall-Sundrum model
p p: scattering
ATLAS
mass spectrum: (top anti-top)

References(64)

Figures(9)

[1]

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

[2]

Cross-Section for Topcolor $Z^{\prime}_t$ Decaying to $t\bar{t}$

e-Print:
- hep-ph/9911288

[3]

Topcolor assisted technicolor

Christopher T. Hill
(
- Fermilab
)

- Phys.Lett.B 345 (1995) 483-489
•
e-Print:
- hep-ph/9411426
•
DOI:
- 10.1016/0370-2693(94)01660-5

[4]

LHC Signals from Warped Extra Dimensions

Kaustubh Agashe
(
- Syracuse U.
)
,
Alexander Belyaev
(
- Michigan State U.
)
,
Tadas Krupovnickas
(
- Brookhaven
)
,
Gilad Perez
(
- YITP, Stony Brook
)
,
Joseph Virzi
(
- LBL, Berkeley
)

- Phys.Rev.D 77 (2008) 015003
•
e-Print:
- hep-ph/0612015
•
DOI:
- 10.1103/PhysRevD.77.015003

[5]

The Bulk RS KK-gluon at the LHC

Ben Lillie
(
- Argonne
)
,
Lisa Randall
(
- Harvard U., Phys. Dept.
)
,
Lian-Tao Wang
(
- Princeton U.
)

- JHEP 09 (2007) 074
•
e-Print:
- hep-ph/0701166
•
DOI:
- 10.1088/1126-6708/2007/09/074

[6]

Kaluza-Klein excitations of gauge bosons at the LHC

Abdelhak Djouadi
(
- Orsay, LPT
)
,
Gregory Moreau
(
- Orsay, LPT
)
,
Ritesh K. Singh
(
- Orsay, LPT and
- Annecy, LAPTH
)

- Nucl.Phys.B 797 (2008) 1-26
•
e-Print:
- 0706.4191
•
DOI:
- 10.1016/j.nuclphysb.2007.12.024

[7]

Gluon-initiated production of a Kaluza-Klein gluon in a Bulk Randall-Sundrum model

Benjamin C. Allanach
(
- Cambridge U., DAMTP
)
,
Farvah Mahmoudi
(
- Clermont-Ferrand U.
)
,
Jordan P. Skittrall
(
- Cambridge U., DAMTP
)
,
K. Sridhar
(
- Annecy, LAPTH and
- Tata Inst.
)

- JHEP 03 (2010) 014
•
e-Print:
- 0910.1350
•
DOI:
- 10.1007/JHEP03(2010)014

[8]

Search for resonant $t \bar{t}$ production in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys.
)

et al.

- Phys.Rev.Lett. 100 (2008) 231801
•
e-Print:
- 0709.0705
•
DOI:
- 10.1103/PhysRevLett.100.231801

[9]

Limits on the production of narrow $t \bar{t}$ resonances in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys.
)

et al.

- Phys.Rev.D 77 (2008) 051102
•
e-Print:
- 0710.5335
•
DOI:
- 10.1103/PhysRevD.77.051102

[10]

Search for New Color-Octet Vector Particle Decaying to t anti-t in p anti-p Collisions at s**(1/2) = 1.96-TeV

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys. and
- Helsinki U.
)

et al.

- Phys.Lett.B 691 (2010) 183-190
•
e-Print:
- 0911.3112
•
DOI:
- 10.1016/j.physletb.2010.06.036

[11]

A Search for resonant production of $t\bar{t}$ pairs in $4.8\ \rm{fb}^{-1}$ of integrated luminosity of $p\bar{p}$ collisions at $\sqrt{s}=1.96\ \rm{TeV}$

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys.
)

et al.

- Phys.Rev.D 84 (2011) 072004
•
e-Print:
- 1107.5063
•
DOI:
- 10.1103/PhysRevD.84.072004

[12]

Search for resonant production of $t\bar{t}$ decaying to jets in $p\bar p$ collisions at $\sqrt{s}=1.96$ TeV

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys.
)

et al.

- Phys.Rev.D 84 (2011) 072003
•
e-Print:
- 1108.4755
•
DOI:
- 10.1103/PhysRevD.84.072003

[13]

Search for $t \bar{t}$ resonances in the lepton plus jets final state in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Lett.B 668 (2008) 98-104
•
e-Print:
- 0804.3664
•
DOI:
- 10.1016/j.physletb.2008.08.027

[14]

Search for a Narrow $t\bar{t}$ Resonance in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 85 (2012) 051101
•
e-Print:
- 1111.1271
•
DOI:
- 10.1103/PhysRevD.85.051101

[15]

Search for Anomalous $t\bar{t}$ Production in the Highly-Boosted All-Hadronic Final State

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 09 (2012) 029,
- JHEP 03 (2014) 132 (erratum)
•
e-Print:
- 1204.2488
•
DOI:
- 10.1007/JHEP09(2012)029

[16]

Top production: Sensitivity to new physics

Christopher T. Hill
(
- Fermilab
)
,
Stephen J. Parke
(
- Fermilab
)

- Phys.Rev.D 49 (1994) 4454-4462
•
e-Print:
- hep-ph/9312324
•
DOI:
- 10.1103/PhysRevD.49.4454

[17]

Luminosity Determination in $pp$ Collisions at $\sqrt{s}=7$ TeV Using the ATLAS Detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Eur.Phys.J.C 71 (2011) 1630
•
e-Print:
- 1101.2185
•
DOI:
- 10.1140/epjc/s10052-011-1630-5

[18]

Luminosity Determination in pp Collisions at sqrt(s) = 7 TeV using the ATLAS Detector in 2011

ATLAS

Collaboration

[19]

Matching NLO QCD computations and parton shower simulations

Stefano Frixione
(
- Annecy, LAPP
)
,
Bryan R. Webber
(
- Cambridge U.
)

- JHEP 06 (2002) 029
•
e-Print:
- hep-ph/0204244
•
DOI:
- 10.1088/1126-6708/2002/06/029

[20]

Matching NLO QCD and parton showers in heavy flavor production

Stefano Frixione
(
- INFN, Genoa
)
,
Paolo Nason
(
- INFN, Milan
)
,
Bryan R. Webber
(
- CERN and
- Cambridge U.
)

- JHEP 08 (2003) 007
•
e-Print:
- hep-ph/0305252
•
DOI:
- 10.1088/1126-6708/2003/08/007

[21]

Implications of CTEQ global analysis for collider observables

Pavel M. Nadolsky
(
- Michigan State U.
)
,
Hung-Liang Lai
(
- Taiwan, Natl. Tsing Hua U. and
- Washington U., Seattle
)
,
Qing-Hong Cao
(
- Michigan State U. and
- Washington U., Seattle and
- UC, Riverside
)
,
Joey Huston
(
- Michigan State U. and
- Washington U., Seattle and
- UC, Riverside
)
,
Jon Pumplin
(
- Michigan State U. and
- Washington U., Seattle and
- UC, Riverside
)

et al.

- Phys.Rev.D 78 (2008) 013004
•
e-Print:
- 0802.0007
•
DOI:
- 10.1103/PhysRevD.78.013004

[22]

HERWIG 6: An Event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)

G. Corcella
(
- Rochester U.
)
,
I.G. Knowles
(
- Edinburgh U.
)
,
G. Marchesini
(
- Milan Bicocca U. and
- INFN, Milan
)
,
S. Moretti
(
- CERN
)
,
K. Odagiri
(
- KEK, Tsukuba
)

et al.

- JHEP 01 (2001) 010
•
e-Print:
- hep-ph/0011363
•
DOI:
- 10.1088/1126-6708/2001/01/010

[23]

Multiparton interactions in photoproduction at HERA

J.M. Butterworth
(
- University Coll. London
)
,
Jeffrey R. Forshaw
(
- Manchester U.
)
,
M.H. Seymour
(
- CERN
)

- Z.Phys.C 72 (1996) 637-646
•
e-Print:
- hep-ph/9601371
•
DOI:
- 10.1007/s002880050286

[24]

Theoretical status and prospects for top-quark pair production at hadron colliders

Sven Moch
(
- DESY, Zeuthen
)
,
Peter Uwer
(
- Karlsruhe U.
)

- Phys.Rev.D 78 (2008) 034003
•
e-Print:
- 0804.1476
•
DOI:
- 10.1103/PhysRevD.78.034003

[25]

Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production

Nikolaos Kidonakis
(
- Kennesaw State U.
)

- Phys.Rev.D 83 (2011) 091503
•
e-Print:
- 1103.2792
•
DOI:
- 10.1103/PhysRevD.83.091503

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