NLO QCD corrections to Wbb̄ and Zbb̄ production
نویسندگان
چکیده
We present NLO QCD results for Wbb̄ and Zbb̄ production at the Tevatron including full bottomquark mass effects. We study the impact of QCD corrections on both total cross-section and invariant mass distribution of the bottom-quark pair. Including NLO QCD corrections greatly reduces the dependence of the tree-level cross-section on the renormalization and factorization scales. We also compare our calculation to a calculation that considers massless bottom quarks and find that the bottom-quark mass effects amount to about 8-10% of the total NLO QCD crosssection and can impact the shape of the bottom-quark pair invariant mass distribution, in particular in the low invariant mass region.
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