کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1840761 | 1031239 | 2012 | 23 صفحه PDF | دانلود رایگان |
We present results of a Lattice QCD application of a coordinate space renormalization scheme for the extraction of renormalization constants for flavour non-singlet bilinear quark operators. The method consists in the analysis of the small-distance behaviour of correlation functions in Euclidean space and has several theoretical and practical advantages, in particular: it is gauge invariant, easy to implement and has relatively low computational cost. The values of renormalization constants in the X-space scheme can be converted to the MS¯ scheme via 4-loop continuum perturbative formulae. Our results for Nf=2Nf=2 maximally twisted mass fermions with tree-level Symanzik improved gauge action are compared to the ones from the RI-MOM scheme and show full agreement with this method.
Journal: Nuclear Physics B - Volume 865, Issue 2, 11 December 2012, Pages 268–290