A measurement of the top-quark pair-production cross section in p (p) over bar collisions at root s = 1.96 TeV using data corresponding to an integrated luminosity of 1.12 fb(-1) collected with the Collider Detector at Fermilab is presented. Decays of top-quark pairs into the final states ev + jets and 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/c(2), a cross section of 8.5 +/- 0.6(stat) +/- 0.7(syst)pb is measured.

Measurement of the t(t)over-bar production cross section with an in situ calibration of b-jet identification efficiency / T., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., J. A., A., A., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 83:(2011), p. 071102. [10.1103/physrevd.83.071102]

Measurement of the t(t)over-bar production cross section with an in situ calibration of b-jet identification efficiency

S. D. Cecco;GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2011

Abstract

A measurement of the top-quark pair-production cross section in p (p) over bar collisions at root s = 1.96 TeV using data corresponding to an integrated luminosity of 1.12 fb(-1) collected with the Collider Detector at Fermilab is presented. Decays of top-quark pairs into the final states ev + jets and 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/c(2), a cross section of 8.5 +/- 0.6(stat) +/- 0.7(syst)pb is measured.
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the t(t)over-bar production cross section with an in situ calibration of b-jet identification efficiency / T., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., J. A., A., A., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 83:(2011), p. 071102. [10.1103/physrevd.83.071102]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/493650
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