文章基本信息

标题：Quark masses with Nf = 2 twisted mass lattice QCD
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作者：F. Sanfilippo ; B. Blossier ; P. Dimopoulos 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2010
卷号：2010
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present the results of the recent high precision lattice calculation of the average up/down, strange and charm quarkmasses performed by ETMC with Nf =2 twisted massWilson fermions. The analysis includes data at four values of the lattice spacing and pion masses as low as ≃ 270 MeV, allowing for accurate continuum limit and chiral extrapolation. The strange and charm masses are extracted by using several methods, based on different observables: the kaon and the hs meson for the strange quark and the D, Ds and hc mesons for the charm. The quark mass renormalization is carried out non-perturbatively using the RI-MOM method. The results for the quark masses in the MS scheme read: mud(2 GeV) = 3.6(2) MeV, ms(2 GeV) = 95(6) MeV and mc(mc) = 1.28(4) GeV. We have also obtained the ratios ms/mud = 27.3(9) and mc/ms = 12.0(3). Moreover, we provide the updated result for the bottom quark mass, mb(mb) = 4.3(2) GeV, obtained using the method presented in [1].