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arXiv 0802.2215hep-ph
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双圈重味对Bhabha散射贡献的计算

Calculation of the Two-Loop Heavy-Flavor Contribution to Bhabha Scattering

R. Bonciani, A. Ferroglia, A. A. Penin

摘要:

本文详细计算了重费米子对真空极化引起的QED Bhabha散射截面的双圈修正。我们的方法从计算的最具挑战性的部分中消除了一个质量尺度,并允许我们以封闭的分析形式获得校正。只要s,t,u >> m_e^2,这个结果对任意重费米子质量和曼德尔翁不变量都是有效的。

英文摘要:

We describe in detail the calculation of the two-loop corrections to the QED Bhabha scattering cross section due to the vacuum polarization by heavy fermions. Our approach eliminates one mass scale from the most challenging part of the calculation and allows us to obtain the corrections in a closed analytical form. The result is valid for arbitrary values of the heavy fermion mass and the Mandelstam invariants, as long as s,t,u >> m_e^2.

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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