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Measurement of the tt̅ [f f overscore] production cross section with an in situ calibration of b-jet identification efficiency

Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Makhoul, Khaldoun; Paus, Christoph M. E.; Bauer, Gerry P
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Abstract
A measurement of the top-quark pair-production cross section in pp̅ [p p overscore] collisions at √s=1.96  [square root of 1.96] TeV using data corresponding to an integrated luminosity of 1.12  fb-1 [fb superscript -1] collected with the Collider Detector at Fermilab is presented. Decays of top-quark pairs into the final states eν+ jets and μν+ [mu v+] jets are selected, and the cross section and the b-jet identification efficiency are determined using a new measurement technique which requires agreement between the measured cross sections with exactly one and with multiple identified b quarks from the top-quark decays. Assuming a top-quark mass of 175  GeV/c2 [GeV / c superscript 2], a cross section of 8.5±0.6(stat)±0.7(syst)pb is measured.
Date issued
2011-04
URI
http://hdl.handle.net/1721.1/65331
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical review D
Publisher
American Physical Society
Citation
Aaltonen, T. "Measurement of the tt̅ production cross section with an in situ calibration of b-jet identification efficiency" Phys. Rev. D, v. 83, 071102(R) (2011) © 2011 American Physical Society
Version: Final published version
ISSN
1550-7998
1550-2368

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