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arXiv 1003.5360hep-ph
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顶夸克衰变到重夸克偶素的次领先阶修正

The Next-to-Leading Order Corrections to Top Quark Decays to Heavy Quarkonia

Peng Sun, Li-Ping Sun, Cong-Feng Qiao

摘要:

在强相互作用下,计算了顶夸克到S波$b\bar{c}$和$b\bar{b}$束缚态的衰变宽度.数值计算表明,这些过程的非线性光学修正是显著的。结果的量子色动力学(QCD)重整化标度依赖性明显降低,从而减少了首阶计算中的不确定性。

英文摘要:

The decay widths of top quark to S-wave $b\bar{c}$ and $b\bar{b}$ bound states are evaluated at the next-to-leading(NLO) accuracy in strong interaction. Numerical calculation shows that the NLO corrections to these processes are remarkable. The quantum chromodynamics(QCD) renormalization scale dependence of the results are obviously depressed, and hence the uncertainties lying in the leading order calculation are reduced.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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