中文

标准模型希格斯扇区中的高阶修正:正确的标度

高能物理 - 唯象学 2015-06-25 v1

摘要

涉及标准模型希格斯玻色子的高能截面的评估需要使用希格斯跑动耦合λ(μ)\lambda(\mu)。取μ\mu等于散射过程的质心能量s\sqrt{s},微扰方法在希格斯质量和耦合相对较小的情况下失效,λ(s)2.2\lambda(\sqrt{s})\approx 2.2。通过对“气泡”费曼图进行近似重求和,我们发现标度μ=s/es/2.7\mu=\sqrt{s}/ e \approx \sqrt{s}/2.7能产生可靠的微扰结果,即使对于大的希格斯质量和耦合也是如此。希格斯跑动耦合的新的微扰上限是λ(s/e)4\lambda(\sqrt{s}/ e)\approx 4

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引用

@article{arxiv.hep-ph/9608356,
  title  = {Higher-order corrections in the SM Higgs sector: the right scale},
  author = {Kurt Riesselmann},
  journal= {arXiv preprint arXiv:hep-ph/9608356},
  year   = {2015}
}

备注

6 pages, two-column style (espcrc2.sty), using LaTeX2e. The complete paper including figures is also available via WWW at http://www.physik.tu-muenchen.de/tumphy/d/T30d/PAPERS/TUM-HEP-249-96.ps.gz To appear in the Proceedings of the Workshop ``QCD and QED in Higher Order'', Rheinsberg, Germany (April 1996), edited by J. Bl\"umlein, F. Jegerlehner, and T. Riemann