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APS » Journals » Phys. Rev. Lett. » Volume 103 » Issue 1
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Phys. Rev. Lett. 103, 012002 (2009) [4 pages]

Next-To-Leading Order QCD Corrections to pp→tt̅ bb̅ +X at the LHC

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A. Bredenstein1, A. Denner2, S. Dittmaier3,4, and S. Pozzorini5
1High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
2Paul Scherrer Institut, Würenlingen und Villigen, CH-5232 Villigen PSI, Switzerland
3Albert-Ludwigs-Universität Freiburg, Physikalisches Institut, D-79104 Freiburg, Germany
4Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), D-80805 München, Germany
5CERN, CH-1211 Geneva 23, Switzerland

Received 1 May 2009; published 1 July 2009

We report on the calculation of the full next-to-leading-order QCD corrections to the production of tt̅ bb̅ final states at the LHC, which deliver a serious background contribution to the production of a Higgs boson (decaying into a bb̅ pair) in association with a tt̅ pair. While the corrections significantly reduce the unphysical scale dependence of the leading-order cross section, our results predict an enhancement of the tt̅ bb̅ production cross section by a K factor of about 1.8.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.012002
DOI:
10.1103/PhysRevLett.103.012002
PACS:
14.65.Ha
 
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