TY  - CONF
AU  - Miura, Kohtaroh
AU  - Borsanyi, Szabolcs
AU  - Fodor, Zoltan
AU  - Kawanai, Taichi
AU  - Krieg, Stefan
AU  - Lellouch, Laurent
AU  - Malak, Rehan
AU  - Szabo, Kalman
AU  - Torrero, Christian
AU  - Thot, B. C.
TI  - Moments of the quark electromagnetic-current two-point function at the physical point: connected contributions
JO  - Proceedings of Science
VL  - LATTICE2016
SN  - 1824-8039
CY  - Trieste
PB  - SISSA
M1  - FZJ-2017-05128
SP  - 174
PY  - 2017
AB  - The low, euclidean momentum behavior of the hadron vacuum polarization (HVP) is critical for determining, amongst other quantities, the anomalous magnetic moments of the muon. Here we present lattice QCD results for the first two derivatives of the HVP function at vanishing virtuality [1]. Computations are performed with 2 + 1 + 1 flavors of staggered quarks around the physical mass point, in volumes of linear extent larger than 6 fm, and at six values of the lattice spacing, allowing for a fully controlled continuum extrapolation. We further consider possible uncertainties which stem from finite-volume and isospin-breaking effects. After adding to our connected contributions the disconnected terms presented in [2], we compare the resulting derivatives of the full HVP with phenomenological estimates.
T2  - 34th International Symposium on Lattice Field Theory
CY  - 24 Jul 2016 - 30 Jul 2016, Southampton (UK)
Y2  - 24 Jul 2016 - 30 Jul 2016
M2  - Southampton, UK
KW  - muon: magnetic moment (INSPIRE)
KW  - vacuum polarization: hadronic: calculated (INSPIRE)
KW  - quantum chromodynamics (INSPIRE)
KW  - lattice field theory (INSPIRE)
KW  - numerical calculations (INSPIRE)
KW  - quark: staggered (INSPIRE)
KW  - quark: flavor: 4 (INSPIRE)
KW  - two-point function (INSPIRE)
KW  - continuum limit (INSPIRE)
KW  - finite size: effect (INSPIRE)
KW  - isospin: symmetry breaking (INSPIRE)
KW  - lattice (INSPIRE)
KW  - hadron (INSPIRE)
KW  - CPT (INSPIRE)
LB  - PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
UR  - https://juser.fz-juelich.de/record/836003
ER  -