Measurement of the $t \bar{t}$ production cross section in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV in dilepton final states

We present a measurement of the top quark pair (ttbar) production cross section in ppbar collisions at a center-of-mass energy of 1.96 TeV using 230 pb-1 of data collected by the DO detector at the Fermilab Tevatron Collider. We select events in the dilepton final states ee, emu and mumu based on kinematical properties consistent with ttbar events. For a top quark mass of 175 GeV, we measure a top pair production cross section sigma(ttbar) = 8.6 +3.2-2.7 (stat) +/-1.1 (syst) +/-0.6 (lumi) pb, in good agreement with the standard model prediction.

Note:

7 pages. 1 Figure. Submitted to Phys. Lett. B Report-no: Fermilab-Pub-05/217-E

13.85.Lg
13.85.Qk
14.65.Ha
D0
anti-p p: colliding beams
anti-p p: inclusive reaction
top: pair production
top: decay
final state: dilepton
channel cross section

References(34)

Figures(0)

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

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

Improved Upper Limit on Flavor Changing Neutral Current Decays of the B Quark

CLEO

Collaboration

•

A. Bean
(
- Carnegie Mellon U.
)

et al.

- Phys.Rev.D 35 (1987) 3533
•
DOI:
- 10.1103/PhysRevD.35.3533

A Measurement of the Weak Axial Couplings of the $b$ and $c$ Quark

JADE

Collaboration

•

E. Elsen
(
- Heidelberg U.
)

et al.

- Z.Phys.C 46 (1990) 349-360
•
DOI:
- 10.1007/BF01621022

Heavy Quark Charge Asymmetries With the Cello Detector

CELLO

Collaboration

•

H.J. Behrend
(
- DESY
)

et al.

- Z.Phys.C 47 (1990) 333-342
•
DOI:
- 10.1007/BF01565856

Measurements of b quark forward - backward charge asymmetry and axial vector coupling using inclusive muons in e+ e- annihilation at s**(1/2) = 52-GeV - 61.4-Gev

TOPAZ

Collaboration

•

A. Shimonaka
(
- Osaka City U.
)

et al.

- Phys.Lett.B 268 (1991) 457-464
•
DOI:
- 10.1016/0370-2693(91)91608-X

Combination of CDF and D0 results on the top-quark mass

CDF and
D0

Collaborations

•

P. Azzi

et al.

e-Print:
- hep-ex/0404010

The Higgs Hunter's Guide

- Front.Phys. 80 (2000) 1-404
•
DOI:
- 10.1201/9780429496448

Weak and Electromagnetic Interactions

Abdus Salam
(
- Imperial Coll., London and
- ICTP, Trieste
)

- Conf.Proc.C 680519 (1968) 367-377,
- Reprinted in *Lichtenberg, D. B. (ed.), Rosen, S. P. (ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 160-170, and in *Lai, C. H. (ed.): Gauge Theory Of Weak and Electromagnetic Interactions*, 188-198,
- Also in *Rosner, J.L. (ed.): New particles* 29-39,
- Also in *Ali, A. (ed.) et al.: Selected papers of Abdus Salam* 244-254
•
DOI:
- 10.1142/9789812795915_0034

A Model of Leptons

Steven Weinberg
(
- MIT, LNS
)

- Phys.Rev.Lett. 19 (1967) 1264-1266,
- Also in *Lichtenberg, D. B. (ed.), Rosen, S. P. (ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 157-159,
- In *Lai, C. H. (ed.): Gauge Theory Of Weak and Electromagnetic Interactions*, 185-187,
- In *Rosner, J. L. (ed.): New Particles*, 26-28
•
DOI:
- 10.1103/PhysRevLett.19.1264