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arXiv 1007.0893hep-ph
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t通道单顶生产的QCD中NLO的生产-衰减干扰

Production-decay interferences at NLO in QCD for t-channel single-top production

Pietro Falgari, Paul Mellor, Adrian Signer

摘要:

本文计算了t通道单顶产生和衰变过程的O(α s)贡献,其中包括产生和衰变子过程干扰引起的虚和实修正。计算是将耦合α_{ew},α_s和中间顶夸克虚性中的矩阵元(p_t^2-m_t^2)/m_t^2 ~ Γ_t/m_t同时展开的,并将以前的结果推广到窄宽近似之外.

英文摘要:

We present a calculation of O(α_s) contributions to the process of t-channel single-top production and decay, which include virtual and real corrections arising from interference of the production and decay subprocesses. The calculation is organized as a simultaneous expansion of the matrix elements in the couplings α_{ew},α_s and the virtuality of the intermediate top quark, (p_t^2-m_t^2)/m_t^2 ~ Γ_t/m_t, and extends earlier results beyond the narrow-width approximation.

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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