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Title: Measurement of the tt̄ production cross section in pp̄ collisions at √s=1.96 TeV using events with large Missing ET and jets

In this paper we report a measurement of the t{anti t} production cross section in pp̄ collisions at √s = 1.96 TeV using data corresponding to an integrated luminosity of 2.2 fb-1 collected with the CDF II detector at the Tevatron accelerator. We select events with significant missing transverse energy and high jet multiplicity. This measurement vetoes the presence of explicitly identified electrons and muons, thus enhancing the tau contribution of tt&#77s; decays. Signal events are discriminated from the background using a neural network and heavy flavor jets are identified by a secondary-vertex tagging algorithm. We measure a tt̄ production cross section of 7.99 ± 0.55(stat) ± 0.76(syst) ± 0.46(lumi) pb, assuming a top mass mtop = 172.5 GeV/c2, in agreement with previous measurements and standard model predictions.
Authors:
 [1]
  1. et al.
Publication Date:
OSTI Identifier:
1021044
Report Number(s):
FERMILAB-PUB--11-210-E-PPD
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1105.1806; TRN: US201116%%691
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Contributing Orgs:
CDF Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COLLISIONS; CROSS SECTIONS; ELECTRONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; FLAVOR; GEV RANGE; JET MODEL; LUMINOSITY; MASS; MULTIPLICITY; MUONS; NEURAL NETWORKS; PAIR PRODUCTION; PROTON-ANTIPROTON INTERACTIONS; STANDARD MODEL; TEV RANGE 01-10; TRANSVERSE ENERGY Experiment-HEP