Lattice calculation of hadronic light-by-light contribution to the muon anomalous magnetic moment

被引：59

作者：

Blum, Thomas ^{[1
,2
]}

Christ, Norman ^{[3
]}

Hayakawa, Masashi ^{[4
,5
]}

Izubuchi, Taku ^{[2
,6
]}

Jin, Luchang ^{[3
]}

Lehner, Christoph ^{[6
]}

机构：

[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

[2] RIKEN, BNL Res Ctr, Brookhaven Natl Lab, Upton, NY 11973 USA

[3] Columbia Univ, Dept Phys, New York, NY 10027 USA

[4] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

[5] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[6] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2016年 / 93卷 / 01期

关键词：

G-2;

D O I：

10.1103/PhysRevD.93.014503

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The quark-connected part of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment is computed using lattice QCD with chiral fermions. We report several significant algorithmic improvements and demonstrate their effectiveness through specific calculations which show a reduction in statistical errors by more than an order of magnitude. The most realistic of these calculations is performed with a near-physical 171 MeV pion mass on a (4.6 fm)(3) spatial volume using the 32(3) x 64 Iwasaki + DSDR gauge ensemble of the RBC/UKQCD Collaboration.

引用

页数：25

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