We present the first direct measurement of the top-quark mass using t (t) over bar events decaying in the hadronic tau + jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb(-1) collected by the CDF II detector in p (p) over bar collisions at root s = 1.96 TeV at the Fermilab Tevatron, we measure the t (t) over bar cross section, sigma(t (t) over bar), and the top-quark mass, M-top. We extract M-top from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure sigma(t (t) over bar) = 8.8 +/- 3.3(stat) +/-2.2(syst) pb and M-top = 172.7 +/- 9.3(stat) +/- 3.7(syst) GeV/c(2).

Measurements of the Top-Quark Mass and the t(t)over-bar Cross Section in the Hadronic tau plus jets Decay Channel at root s=1.96 TeV / T., A., B. a., G., S., A., D., A., A., A., A., A., J., A., G., A., J. a., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. e., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 109:(2012), p. 192001. [10.1103/physrevlett.109.192001]

Measurements of the Top-Quark Mass and the t(t)over-bar Cross Section in the Hadronic tau plus jets Decay Channel at root s=1.96 TeV

GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2012

Abstract

We present the first direct measurement of the top-quark mass using t (t) over bar events decaying in the hadronic tau + jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb(-1) collected by the CDF II detector in p (p) over bar collisions at root s = 1.96 TeV at the Fermilab Tevatron, we measure the t (t) over bar cross section, sigma(t (t) over bar), and the top-quark mass, M-top. We extract M-top from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure sigma(t (t) over bar) = 8.8 +/- 3.3(stat) +/-2.2(syst) pb and M-top = 172.7 +/- 9.3(stat) +/- 3.7(syst) GeV/c(2).
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Measurements of the Top-Quark Mass and the t(t)over-bar Cross Section in the Hadronic tau plus jets Decay Channel at root s=1.96 TeV / T., A., B. a., G., S., A., D., A., A., A., A., A., J., A., G., A., J. a., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. e., B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 109:(2012), p. 192001. [10.1103/physrevlett.109.192001]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/518569
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