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 t̅ Cross Section in the Hadronic τ+jets Decay Channel at √s=1.96 TeV

M. A. Ciocci;DELL'ORSO, MAURO;DONATI, SIMONE;PUNZI, GIOVANNI;F. Ruffini;
2012-01-01

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
Aaltonen, T.; ?lvarez Gonz?lez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/519277
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