Measurements of the Top-Quark Mass and the tt̅ Cross Section in the Hadronic τ+jets Decay Channel at √s=1.96 TeV
Author(s)Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.
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We present the first direct measurement of the top-quark mass using tt̅ events decaying in the hadronic τ+jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb[superscript -1] collected by the CDF II detector in pp̅ collisions at √s=1.96 TeV at the Fermilab Tevatron, we measure the tt̅ cross section, σ[subscript tt̅] , and the top-quark mass, M[subscript top]. We extract M[subscript top] from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure σ[subscript tt̅] =8.8±3.3(stat)±2.2(syst) pb and M[subscript top]=172.7±9.3(stat)±3.7(syst) GeV/c[superscript 2].
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Physical Review Letters
American Physical Society
Aaltonen, T. et al. “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 109.19 (2012). © 2012 American Physical Society
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