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  • 标题:RI-MOM scheme renormalization constants (Nf=4) and the running coupling constant (Nf=2+1+1) using twisted-Wilson quarks
  • 本地全文:下载
  • 作者:X. Du
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2011
  • 卷号:2011
  • 期号:Lattice2011
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:We study RI/MOM renormalization constants of bilinear quark operators for Nf = 4 and the strong coupling constant for Nf = 2+1+1 using Wilson twisted-mass fermions. We use the “egalitarian” method to remove H(4) hypercubic artifacts non-perturbatively, which enables us to study physical quantities in a wide range of momenta. We then apply OPE in studying the running behavior of Zq and as, from which we are able to extract the Landau gauge dimension-two gluon condensate hA2i which is of phenomenological interest.
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