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).

T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, et al. (2012). Measurements of the Top-Quark Mass and the tt[over ¯] Cross Section in the Hadronic τ+jets Decay Channel at sqrt[s]=1.96  TeV. PHYSICAL REVIEW LETTERS, 109, 192001-1-192001-8 [10.1103/PhysRevLett.109.192001].

Measurements of the Top-Quark Mass and the tt[over ¯] Cross Section in the Hadronic τ+jets Decay Channel at sqrt[s]=1.96  TeV

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
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
T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, et al. (2012). Measurements of the Top-Quark Mass and the tt[over ¯] Cross Section in the Hadronic τ+jets Decay Channel at sqrt[s]=1.96  TeV. PHYSICAL REVIEW LETTERS, 109, 192001-1-192001-8 [10.1103/PhysRevLett.109.192001].
T. Aaltonen;B. Álvarez González;S. Amerio;D. Amidei;A. Anastassov;A. Annovi;J. Antos;G. Apollinari;J. A. Appel;T. Arisawa;A. Artikov;J. Asaadi;W. Ashm...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/152374
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