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High Energy Physics - Phenomenology

arXiv:hep-ph/0510069 (hep-ph)
[Submitted on 6 Oct 2005 (v1), last revised 9 Dec 2005 (this version, v4)]

Title:Gauge dependence of fermion mass renormalization schemes

Authors:Yong Zhou
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Abstract: We discuss the gauge dependence of fermion mass definition and physical result under the conventional on-shell mass renormalization scheme and the recently proposed pole mass renormalization scheme in standard model. By the two-loop calculations of top quark's mass counterterm and the cross section of physical process $W^{-}W^{+}\to b\bar{b}$ we strictly prove that the on-shell mass renormalization scheme makes fermion mass definition and the physical result gauge dependent at the first time, while we don't find such gauge dependence in the pole mass renormalization scheme. Besides, our calculation also shows the difference of the physical result between the two mass renormalization schemes cannot be neglected at two-loop level.
Comments: 10 pages, 10 figures
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0510069
  (or arXiv:hep-ph/0510069v4 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0510069

Submission history

From: Yong Zhou [view email]
[v1] Thu, 6 Oct 2005 09:33:16 UTC (16 KB)
[v2] Sun, 9 Oct 2005 09:16:01 UTC (121 KB)
[v3] Sun, 20 Nov 2005 13:54:00 UTC (120 KB)
[v4] Fri, 9 Dec 2005 02:08:58 UTC (120 KB)
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