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arXiv 1608.04205hep-ph
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电子正电子湮没为强子的R比:高阶pi2-terms

R-ratio of electron-positron annihilation into hadrons: higher-order pi2-terms

A. V. Nesterenko, S. A. Popov

摘要:

研究了电子正电子湮没成强子的R比的高能行为。特别是,有人认为,在任何给定的阶微扰理论的再膨胀的R-比在紫外渐近可以减少到幂级数的形式,在天真的延续强运行耦合到类时域。讨论了重新展开的R比和相应的高阶π ~ 2项的收敛范围。

英文摘要:

High-energy behavior of R-ratio of electron-positron annihilation into hadrons is studied. In particular, it is argued that at any given order of perturbation theory the re-expansion of the R-ratio in the ultraviolet asymptotic can be reduced to the form of power series in the naive continuation of the strong running coupling into the timelike domain. The convergence range of the re-expanded R-ratio and the corresponding higher-order pi2-terms are discussed.

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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