Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-04-17
JHEP 0809:127,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
Updated description of comparison with 0804.1476. Improvements in text and update of published references. No changes in resul
Scientific paper
10.1088/1126-6708/2008/09/127
We present updated predictions for the total production cross section of top-quark pairs at the Tevatron and at the LHC, and, at the LHC, of heavy-quark pairs with mass in the range 0.5-2 TeV. For t\bar{t} production at the LHC we also present results at \sqrt{S}= 10 TeV, in view of the expected accelerator conditions during the forthcoming 2008 run. Our results are accurate at the level of next-to-leading order in alpha_s, and of next-to-leading threshold logarithms (NLO+NLL). We adopt the most recent parametrizations of parton distribution functions, and compute the corresponding uncertainties. We study the dependence of the results on the top mass, and we assess the impact of missing higher-order corrections by independent variations of factorisation and renormalisation scales.
Cacciari Matteo
Frixione Stefano
Mangano Michelangelo L.
Nason Paolo
Ridolfi Giovanni
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