Non-perturbative quark mass renormalisation and running in Nf=3 QCD

被引：0

作者：

Campos, I. ^{[1
]}

Fritzsch, P. ^{[2
]}

Pena, C. ^{[3
,4
]}

Preti, D. ^{[5
]}

Ramos, A. ^{[6
]}

Vladikas, A. ^{[7
]}

机构：

[1] CSIC, Inst Fis Cantabria IFCA, Avda Los Castros S-N, Santander 39005, Spain

[2] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

[3] Univ Autonoma Madrid, CSIC, Inst Fis Teor UAM, Madrid 28049, Spain

[4] Univ Autonoma Madrid, Dpto Fis Teor, Madrid 28049, Spain

[5] INFN, Sez Torino, Via Pietro Giuria 1, I-10125 Turin, Italy

[6] Trinity Coll Dublin, Sch Math, Dublin 2, Ireland

[7] Univ Roma Tor Vergata, INFN, Dipartimento Fis, Sez Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy

来源：

EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 05期

关键词：

ABELIAN GAUGE-THEORIES; QUANTUM-FIELD-THEORY; LATTICE QCD; ANOMALOUS DIMENSION; SCHRODINGER REPRESENTATION; WILSON FERMIONS; AXIAL CURRENT; CHARM QUARK; IMPROVEMENT; COMPUTATION;

D O I：

10.1140/epjc/s10052-018-5870-5

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 determine from first principles the quark mass anomalous dimension in N-f = 3 QCD between the electroweak and hadronic scales. This allows for a fully non-perturbative connection of the perturbative and non-perturbative regimes of the Standard Model in the hadronic sector. The computation is carried out to high accuracy, employing massless O(a)-improved Wilson quarks and finite-size scaling techniques. We also provide the matching factors required in the renormalisation of light quark masses from lattice computations with O(a)-improved Wilson fermions and a tree-level Symanzik improved gauge action. The total uncertainty due to renormalisation and running in the determination of light quark masses in the SM is thus reduced to about 1%.

引用

页数：23

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