Heavy Quark Masses (from QCD Sum Rules) and their impact on the (g-2)μ

被引:0
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作者
Erler, Jens [1 ,2 ,3 ]
Masjuan, Pere [5 ,6 ]
Spiesberger, Hubert [1 ,4 ]
机构
[1] Johannes Gutenberg Univ Mainz, PRISMA, D-55099 Mainz, Germany
[2] Johannes Gutenberg Univ Mainz, Cluster Excellence, D-55099 Mainz, Germany
[3] Johannes Gutenberg Univ Mainz, Inst Nucl Phys, D-55099 Mainz, Germany
[4] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[5] Univ Autonoma Barcelona, Dept Fis, Grp Fis Teor, Campus UAB, E-08193 Bellaterra, Barcelona, Spain
[6] Barcelona Inst Sci & Technol, Inst Fis Altes Energies, Campus UAB, E-08193 Bellaterra, Barcelona, Spain
来源
10TH INTERNATIONAL WORKSHOP ON CHARM PHYSICS | 2021年
关键词
VACUUM POLARIZATION FUNCTION; MOMENTS; CHARM;
D O I
暂无
中图分类号
O59 [应用物理学];
学科分类号
摘要
We determine the charm and the bottom quark masses m(c)(m(c)) and m(b)(m(b)) from QCD sum rules of moments of the vector current correlator calculated in perturbative QCD. Only experimental data for the heavy-quark resonances below the continuum threshold are needed in our approach, while the continuum contribution is determined by requiring self-consistency between various sum rules, including the one for the zeroth moment. Existing data from the continuum region can then be used to constraint the theoretical error providing a suitable parameterization of such continuum region. Our result is m(c)(m(c)) = 1272 +/- 8 MeV and m(b)(m(b)) = 4180 +/- 9MeV for alpha(s) (M-z) = 0.1182. As a byproduct, the parameterization of the ' (1) B degrees function and the heavy-quark masses are used to determine the contribution of the heavy quarks to the Hadronic Vacuum Polarization contribution to the anomalous magnetic moment of the muon yielding alpha(had,)(mu,LO) (charm) = 14.36(23) x 10(-10) and alpha(had,)(mu,LO) (charm) = 0.30 x 10(-10) respectively.
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页数:7
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