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Measurement of the tt ̄ production cross section in pp ̄ collisions at sqrt(s)=1.96 TeV using events with large missing transverse energy and jets

Aaltonen T.
•
Álvarez González B.
•
Amerio S.
altro
Zucchelli S.
2011
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
In this paper we report a measurement of the tt̅ production cross section in pp̅ 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 tt̅ 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 tt̅ 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.
DOI
10.1103/PhysRevD.84.032003
WOS
WOS:000293703700001
Archivio
http://hdl.handle.net/11390/865877
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-80052685562
http://link.aps.org/doi/10.1103/PhysRevD.84.032003
Diritti
closed access
Scopus© citazioni
10
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
8
Data di acquisizione
Mar 18, 2024
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