We present the first direct measurement of the top-quark mass using ttÌ events decaying in the hadronic Ï+jets decay channel. Using data corresponding to an integrated luminosity of 2.2fb -1 collected by the CDF II detector in ppÌ collisions at âs=1.96TeV at the Fermilab Tevatron, we measure the ttÌ cross section, Ï ttÌ, 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 Ï ttÌ=8. 8±3.3(stat)±2.2(syst)pb and M top=172.7±9.3(stat) ±3.7(syst)GeV/c2. © 2012 American Physical Society.
Measurements of the top-quark mass and the ttÌ cross section in the hadronic Ï+jets decay channel at âs=1.96TeV
PAGLIARONE, Carmine Elvezio;PIACENTINO, Giovanni Maria;
2012-01-01
Abstract
We present the first direct measurement of the top-quark mass using ttÌ events decaying in the hadronic Ï+jets decay channel. Using data corresponding to an integrated luminosity of 2.2fb -1 collected by the CDF II detector in ppÌ collisions at âs=1.96TeV at the Fermilab Tevatron, we measure the ttÌ cross section, Ï ttÌ, 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 Ï ttÌ=8. 8±3.3(stat)±2.2(syst)pb and M top=172.7±9.3(stat) ±3.7(syst)GeV/c2. © 2012 American Physical Society.File in questo prodotto:
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