Next-To-Leading Order QCD Corrections to pp → t(t)over-barb(b)over-bar + X at the LHC
Next-To-Leading Order QCD Corrections to pp → t(t)over-barb(b)over-bar + X at the LHC
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DOI：
10.1103/physrevlett.103.012002
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发表时间：
2009-07-03
影响因子：
8.6
通讯作者：
Pozzorini, S.
中科院分区：
文献类型：
--
作者：
Bredenstein, A.;Denner, A.;Pozzorini, S.
我们报告了在大型强子对撞机上t (t) / barb (b) / bar最终态产生的完整次序QCD修正的计算，这对与t (t) / bar对相关的希格斯玻色子（衰变成b (b) / bar对）的产生提供了重要的背景贡献。虽然修正显著降低了首阶截面的非物理尺度依赖性，但我们的研究结果预测，t (t)比倒钩(b)比棒材生产截面的K系数提高了约1.8。
We report on the calculation of the full next-to-leading-order QCD corrections to the production of t (t) over barb (b) over bar final states at the LHC, which deliver a serious background contribution to the production of a Higgs boson (decaying into a b (b) over bar pair) in association with a t (t) over bar pair. While the corrections significantly reduce the unphysical scale dependence of the leading-order cross section, our results predict an enhancement of the t (t) over barb (b) over bar production cross section by a K factor of about 1.8.