Forward-backward asymmetry in top quark-antiquark production - INSPIRE

DataBETA

Forward-backward asymmetry in top quark-antiquark production

D0

Collaboration

Jul, 2011

13 pages

Published in:

Phys.Rev.D 84 (2011) 112005

e-Print:

1107.4995 [hep-ex]

DOI:

10.1103/PhysRevD.84.112005

PDG:

A_{FB}

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

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

\sqrt {s }

Report number:

FERMILAB-PUB-11-347-E

Experiments:

FNAL-E-0823

View in:

reference search445 citations

Citations per year

Abstract: (arXiv)

We present a measurement of forward-backward asymmetry in top quark-antiquark production in proton-antiproton collisions in the final state containing a lepton and at least four jets. Using a dataset corresponding to an integrated luminosity of

5.4\,\mathrm {fb}^{-1}

, collected by the \DZ\ experiment at the Fermilab Tevatron Collider, we measure the \ttbar\ forward-backward asymmetry to be

(9.2 \pm 3.7)

% at the reconstruction level. When corrected for detector acceptance and resolution, the asymmetry is found to be

(19.6 \pm 6.5)

%. We also measure a corrected asymmetry based on the lepton from a top quark decay, found to be

(15.2 \pm 4.0)

%. The results are compared to predictions based on the next-to-leading-order QCD generator {\sc mc@nlo}. The sensitivity of the measured and predicted asymmetries to the modeling of gluon radiation is discussed.

13.85.-t
11.30.Er
14.65.Ha
12.38.Qk
angular distribution: asymmetry
top: decay
top: pair production
gluon: radiation
higher-order: 1
Batavia TEVATRON Coll

References(36)

Figures(14)

Observation of the top quark

D0

Collaboration

•

S. Abachi
(
- Fermilab
)

et al.

- Phys.Rev.Lett. 74 (1995) 2632-2637
•
e-Print:
- hep-ex/9503003
•
DOI:
- 10.1103/PhysRevLett.74.2632

Observation of top quark production in $\bar{p}p$ collisions

CDF

Collaboration

•

F. Abe
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.Lett. 74 (1995) 2626-2631
•
e-Print:
- hep-ex/9503002
•
DOI:
- 10.1103/PhysRevLett.74.2626

Properties of the Top Quark

Daniel Wicke
(
- Wuppertal U., Dept. Math.
)

- Eur.Phys.J.C 71 (2011) 1627
•
e-Print:
- 1005.2460
•
DOI:
- 10.1140/epjc/s10052-011-1627-0

Charge asymmetry in hadroproduction of heavy quarks

Johann H. Kuhn
(
- Karlsruhe U., TTP
)
,
German Rodrigo
(
- Karlsruhe U., TTP
)

- Phys.Rev.Lett. 81 (1998) 49-52
•
e-Print:
- hep-ph/9802268
•
DOI:
- 10.1103/PhysRevLett.81.49

The Forward-backward asymmetry of top quark production at the Tevatron in warped extra dimensional models

- Phys.Rev.D 82 (2010) 071702
•
e-Print:
- 0906.0604
•
DOI:
- 10.1103/PhysRevD.82.071702

Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs

Edmond L. Berger
(
- Argonne
)
,
Qing-Hong Cao
(
- Argonne and
- Chicago U. and
- Peking U. and
- Peking U., CAPT
)
,
Chuan-Ren Chen
(
- Tokyo U., IPMU
)
,
Chong Sheng Li
(
- Peking U. and
- Peking U., CAPT
)
,
Hao Zhang
(
- Peking U. and
- Peking U., CAPT
)

- Phys.Rev.Lett. 106 (2011) 201801
•
e-Print:
- 1101.5625
•
DOI:
- 10.1103/PhysRevLett.106.201801

First measurement of the forward-backward charge asymmetry in top quark pair production

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.Lett. 100 (2008) 142002
•
e-Print:
- 0712.0851
•
DOI:
- 10.1103/PhysRevLett.100.142002

Forward-Backward Asymmetry in Top Quark 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. 101 (2008) 202001
•
e-Print:
- 0806.2472
•
DOI:
- 10.1103/PhysRevLett.101.202001

Evidence for a Mass Dependent Forward-Backward Asymmetry in Top Quark Pair Production

CDF

Collaboration

•

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

et al.

- Phys.Rev.D 83 (2011) 112003
•
e-Print:
- 1101.0034
•
DOI:
- 10.1103/PhysRevD.83.112003

The Upgraded D0 Detector

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Nucl.Instrum.Meth.A 565 (2006) 463-537
•
e-Print:
- physics/0507191
•
DOI:
- 10.1016/j.nima.2006.05.248

The Layer 0 Inner Silicon Detector of the D0 Experiment

D0

Collaboration

•

R. Angstadt
(
- Fermilab
)

et al.

- Nucl.Instrum.Meth.A 622 (2010) 298-310
•
e-Print:
- 0911.2522
•
DOI:
- 10.1016/j.nima.2010.04.148

Design and Implementation of the New D0 Level-1 Calorimeter Trigger

M. Abolins
(
- Michigan State U.
)
,
M. Adams
(
- Illinois U., Chicago
)
,
T. Adams
(
- Florida State U.
)
,
Ernest Aguilo
(
- Alberta U. and
- York U., Canada
)
,
J. Anderson
(
- Fermilab
)

et al.

- Nucl.Instrum.Meth.A 584 (2008) 75-97
•
e-Print:
- 0709.3750
•
DOI:
- 10.1016/j.nima.2007.10.014

The D0 Detector

D0

Collaboration

•

S. Abachi

et al.

- Nucl.Instrum.Meth.A 338 (1994) 185-253
•
DOI:
- 10.1016/0168-9002(94)91312-9

The Muon system of the run II D0 detector

et al.

- Nucl.Instrum.Meth.A 552 (2005) 372-398
•
e-Print:
- physics/0503151
•
DOI:
- 10.1016/j.nima.2005.07.008

$b$ -Jet Identification in the D0 Experiment

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Nucl.Instrum.Meth.A 620 (2010) 490-517
•
e-Print:
- 1002.4224
•
DOI:
- 10.1016/j.nima.2010.03.118

Measurement of the Top Quark Pair Production Cross Section in the Lepton+Jets Channel in Proton-Antiproton Collisions at $\sqrt{s}$ =1.96 TeV

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 84 (2011) 012008
•
e-Print:
- 1101.0124
•
DOI:
- 10.1103/PhysRevD.84.012008

Measurement of the $t \bar{t}$ production cross section in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV using kinematic characteristics of lepton + jets events

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 76 (2007) 092007
•
e-Print:
- 0705.2788
•
DOI:
- 10.1103/PhysRevD.76.092007

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

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

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

ALPGEN, a generator for hard multiparton processes in hadronic collisions

Michelangelo L. Mangano
(
- CERN
)
,
Mauro Moretti
(
- Ferrara U. and
- INFN, Ferrara
)
,
Fulvio Piccinini
(
- CERN
)
,
Roberto Pittau
(
- Turin U. and
- INFN, Turin
)
,
Antonio D. Polosa
(
- CERN
)

- JHEP 07 (2003) 001
•
e-Print:
- hep-ph/0206293
•
DOI:
- 10.1088/1126-6708/2003/07/001

High-energy physics event generation with PYTHIA 6.1

et al.

- Comput.Phys.Commun. 135 (2001) 238-259
•
e-Print:
- hep-ph/0010017
•
DOI:
- 10.1016/S0010-4655(00)00236-8

Combination of CDF and D0 Results on the Mass of the Top Quark Using Up to 5.6 $fb^{-1}$ of Data

CDF and
D0

Collaborations

•

The Tevatron Electroweak Working Group

for the collaborations.

e-Print:
- 1007.3178

Measurement of the W Boson Helicity in Top Quark Decays using 5.4 fb $^{-1}$ of $p\bar{p}$ Collision Data

D0

Collaboration

•

Victor Mukhamedovich Abazov
(
- Dubna, JINR
)

et al.

- Phys.Rev.D 83 (2011) 032009
•
e-Print:
- 1011.6549
•
DOI:
- 10.1103/PhysRevD.83.032009

On Models of New Physics for the Tevatron Top $A_{FB}$

Moira I. Gresham
(
- Michigan U., MCTP
)
,
Ian-Woo Kim
(
- Michigan U., MCTP
)
,
Kathryn M. Zurek
(
- Michigan U., MCTP
)

- Phys.Rev.D 83 (2011) 114027
•
e-Print:
- 1103.3501
•
DOI:
- 10.1103/PhysRevD.83.114027

1-25 of 36
1
2
25 / page