NLO QCD corrections to top anti-top bottom anti-bottom production at the LHC

Details NLO QCD corrections to top anti-top bottom anti-bottom production at the LHC NLO QCD corrections to top anti-top bottom anti-bottom production at the LHC

2010-01-26

arxiv.org/abs/1001.4727v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6+1 pages, contribution to the proceedings of the 9th International Symposium on Radiative Corrections (RADCOR 2009), October

Scientific paper

The next-to-leading order (NLO) QCD corrections to top anti-top bottom anti-bottom (tTbB) production at the LHC reveal that the scale choice adopted in previous lowest-order simulations underestimates the tTbB cross section by a factor two. We discuss a new dynamical scale that stabilizes the perturbative predictions and describe the impact of the corrections on the shape of distributions. We also account for the techniques employed to compute the six-particle one-loop amplitudes with high CPU efficiency.

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