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One-loop QCD corrections to the e+e-→ W+W+b-b- process at the ILC
Guo Lei *,Ma Wen-Gan,Zhang Ren-You,Wang Shao-Ming
Department of Modern Physics, University of Science and Technology
*Correspondence author
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Funding: 国家自然科学基金,国家自然科学基金,国家自然科学基金,高等学校博士学科点专项科研基金（No.10575094,10575095,10675110,20050358063）
Opened online: 7 March 2008
Accepted by: none
Citation: Guo Lei,Ma Wen-Gan,Zhang Ren-You.One-loop QCD corrections to the e+e-→ W+W+b-b- process at the ILC[OL]. [ 7 March 2008] http://en.paper.edu.cn/en_releasepaper/content/19114
 
 
We study the full contributions at the leading order(LO) and QCD next-to-leading order(NLO) to the cross section of the $e^+e^- \to W^+ W^- b\bar b$ process in the standard model(SM) at the ILC. In dealing the resonance problem we adopted the complex mass scheme in both tree-level and one-loop level perturbative calculations. Our numerical results show that the K-factor varies from $1.501$ to $0.847$ when $\sqrt{s}$ goes up from $360~GeV$ to $1.5~TeV$. We investigate the dependence of the LO and QCD NLO corrected cross sections of process $e^+e^- \to W^+ W^- b\bar b$ on colliding energy $\sqrt{s}$ and Higgs-boson mass. We also present the results of the LO and QCD NLO corrected distributions of the transverse momenta of final particles, and the invariant masses of $Wb$-, $b\bar b$- and $WW$-pair.
Keywords:ILC，QCD，Top-quark，Higgs-boson
 
 
 

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