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arXiv 1111.3023hep-lat
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由扭转质量QCD计算RI/MOM重整化常数(N_f=4)和强耦合常数(N_f=2+1+1

RI/MOM renormalization constants (N_f=4) and the strong coupling constant (N_f=2+1+1) from twisted-mass QCD

B. Blossier, Ph. Boucaud, M. Brinet, F. De Soto, X. Du, M. Gravina, Z. Liu, V. Morenas, O. Pène, K. Petrov, J. Rodríguez-Quintero

摘要:

我们用Wilson扭转质量费米子研究了$N_f=4$双线性夸克算符的RI/π重整化常数和$N_f=2+1+1$的强耦合常数。我们使用“平均主义”方法非微扰地去除H(4)超立方伪影,这使我们能够研究宽动量范围内的物理量。然后我们利用OPE研究了$Z_q$和$α_s$的运行行为,从中提取出了具有唯象意义的Landau规范二维胶子凝聚$<A^2>$.

英文摘要:

We study RI/MOM renormalization constants of bilinear quark operators for $N_f=4$ and the strong coupling constant for $N_f=2+1+1$ 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 $Z_q$ and $α_s$, from which we are able to extract the Landau gauge dimension-two gluon condensate $<A^2>$ which is of phenomenological interest.

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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