TY  - CONF
AU  - Asmussen, Nils
AU  - Gerardin, Antoine
AU  - Green, Jeremy
AU  - Gryniuk, Oleksii
AU  - von Hippel, Georg
AU  - Meyer, Harvey B.
AU  - Nyffeler, Andreas
AU  - Pascalutsa, Vladimir
AU  - Wittig, Hartmut
TI  - Hadronic light-by-light scattering contribution to the muon g-2 on the lattice
IS  - DESY-18-007
M1  - PUBDB-2018-00802
M1  - DESY-18-007
M1  - MITP-18-001
M1  - arXiv:1801.04238
SP  - 8
PY  - 2018
AB  - We briefly review several activities at Mainz related to hadronic light-by-light scattering (HLbL) using lattice QCD. First we present a position-space approach to the HLbL contribution in the muon g-2, where we focus on exploratory studies of the pion-pole contribution in a simple model and the lepton loop in QED in the continuum and in infinite volume. The second part describes a lattice calculation of the double-virtual pion transition form factor F<sub>pi<sup>0</sup> γ<sup>*</sup> γ<sup>*</sup></sub>(q<sub>1</sub><sup>2</sup>, q<sub>2</sub><sup>2</sup>) in the spacelike region with photon virtualities up to 1.5 GeV<sup>2</sup> which paves the way for a lattice calculation of the pion-pole contribution to HLbL. The third topic involves HLbL forward scattering amplitudes calculated in lattice QCD which can be described, using dispersion relations (HLbL sum rules), by γ<sup>*</sup> γ<sup>*</sup> → hadrons fusion cross sections and then compared with phenomenological models.
T2  - Workshop on Flavour changing and conserving processes
CY  - 7 Sep 2017 - 9 Sep 2017, Anacapri, Capri Island (Italy)
Y2  - 7 Sep 2017 - 9 Sep 2017
M2  - Anacapri, Capri Island, Italy
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)8
DO  - DOI:10.3204/PUBDB-2018-00802
UR  - https://bib-pubdb1.desy.de/record/399634
ER  -