Measurement of the $t \bar{t}$ Production Cross Section in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$

25 August 2006

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 97 (8) , 082004
https://doi.org/10.1103/physrevlett.97.082004

Abstract

We present a measurement of the top quark pair production cross section in

p \bar{p}

collisions at

\sqrt{s} = 1.96 TeV

using

318 {pb}^{- 1}

of data collected with the Collider Detector at Fermilab. We select

t \bar{t}

decays into the final states

e ν + jets

and

μ ν + jets

, in which at least one

b

quark from the

t

-quark decays is identified using a secondary vertex-finding algorithm. Assuming a top quark mass of

178 GeV / c^{2}

, we measure a cross section of

8.7 \pm 0.9 (stat)_{- 0.9}^{+ 1.1} (syst) pb

. We also report the first observation of

t \bar{t}

with significance greater than

5 σ

in the subsample in which both

b

quarks are identified, corresponding to a cross section of

{10.1}_{- 1.4}^{+ 1.6} (stat)_{- 1.3}^{+ 2.0} (syst) pb

Keywords

All Related Versions

This publication has 25 references indexed in Scilit:

Measurement of the cross section for $t \bar{t}$ production in $p \bar{p}$ collisions using the kinematics of lepton $+$ jets events
Physical Review D, 2005
Measurement of thett¯production cross section inpp¯collisions ats=1.96 TeVusing kinematic fitting ofb-tagged lepton+jet events
Physical Review D, 2005
Measurement of the $t \bar{t}$ production cross section in $p \bar{p}$ collisions at $\sqrt{s} = 1.96 TeV$ using lepton $+$ jets events with secondary vertex $b$ -tagging
Physical Review D, 2005
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Measurement of thett¯Production Cross Section inpp¯Collisions ats=1.96 TeV

Abstract

Keywords

All Related Versions

Measurement of the $t \bar{t}$ Production Cross Section in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$