Non-perturbatively renormalised light quark masses from a lattice simulation with Nf = 2

被引：30

作者：

Becirevic, D

Blossier, B

Boucaud, P

Giménez, V

Lubicz, V

Mescia, F

Simula, S

Tarantino, C

机构：

[1] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[2] Univ Paris 11, Theoret Phys Lab, Ctr Orsay, F-91405 Orsay, France

[3] Univ Valencia, Dept Fis Teor, E-46100 Burjassot, Valencia, Spain

[4] Univ Valencia, IFIC, E-46100 Burjassot, Valencia, Spain

[5] Ist Nazl Fis Nucl, Sez Roma 3, I-00146 Rome, Italy

[6] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

来源：

NUCLEAR PHYSICS B | 2006年 / 734卷 / 1-2期

关键词：

D O I：

10.1016/j.nuclphysb.2005.11.014

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present results for the light quark masses obtained from a lattice QCD simulation with N-f = 2 degenerate Wilson dynamical quark flavours. The sea quark masses of our lattice, of spacing a similar or equal to 0.06 fm, are relatively heavy, i.e., they cover the range corresponding to 0.60 less than or similar to M-p/M-V less than or similar to 0.75. After implementing the non-perturbative RI-MOM method to renormalise quark masses, we obtain m(ud)((MS) over bar)(2 GeV)= 4.3 +/- 0.4(-0)(+1.1) MeV, and m(s)((MS) over bar)(2 GeV) = 101 +/- 8(-0)(+25) MeV, which are about 15% larger than they would be if renormalised perturbatively. In addition, we show that the above results are compatible with those obtained in a quenched simulation with a similar lattice. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：138 / 155

页数：18

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