Measurement of the Top Pair Production Cross Section in the Lepton + Jets Channel Using a Jet Flavor Discriminant - INSPIRE

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Measurement of the Top Pair Production Cross Section in the Lepton + Jets Channel Using a Jet Flavor Discriminant

CDF

Collaboration

Mar, 2011

7 pages

Published in:

Phys.Rev.D 84 (2011) 031101

e-Print:

1103.4821 [hep-ex]

DOI:

10.1103/PhysRevD.84.031101

PDG:

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

Production Cross Section in

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

\sqrt {s }

Report number:

FERMILAB-PUB-11-148-E

Experiments:

FNAL-E-0830

View in:

reference search15 citations

Citations per year

Abstract: (arXiv)

We present a new method to measure the top quark pair production cross section and the background rates with 2.7 fb

^{-1}

of data from

p\bar{p}

collisions at

\sqrt{s} =1.96

TeV collected with the CDF II Detector. The size of the dataset was chosen to directly show the improvements of this new method. We select events with a single electron or muon, missing transverse energy, and at least one b-tagged jet. We perform a simultaneous fit to a jet flavor discriminant across nine samples defined by the number of jets and b-tags. We measure a top cross section of

\sigma_{t\bar{t}} = 7.64 \pm 0.57 \mathrm{(stat + syst)} \pm 0.45 \mathrm{(luminosity)}

pb. An advantage of this approach is that many systematic uncertainties are measured in situ and inversely scale with integrated luminosity.

Note:

7 pages 2 figures, published in PRD as a Rapid Communication, Aug 2011

14.65.Ha
13.87.-a
13.85.Qk
top: pair production
channel cross section: measured
jet: particle identification
CDF
anti-p p: interaction
data analysis method
final state: ((n)jet lepton)

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