Measurement of the tt¯ production cross section with an in situ calibration of b-jet identification efficiency Academic Article uri icon

abstract

  • A measurement of the top-quark pair-production cross section in pp̄ collisions at √s=1.96TeV using data corresponding to an integrated luminosity of 1.12fb-1 collected with the Collider Detector at Fermilab is presented. Decays of top-quark pairs into the final states eν+ jets and μν+ 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 175GeV/c2, a cross section of 8.5±0.6(stat)±0. 7(syst)pb is measured. © 2011 American Physical Society.

author list (cited authors)

  • Aaltonen, T., González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., ... Zucchelli, S.

citation count

  • 8

publication date

  • April 2011