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2015

Direct calculation of hadronic light-by-light scattering

Green, Jeremy, Asmussen, Nils, Gryniuk, Oleksii et al.

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We report calculations of hadronic light-by-light scattering amplitudes via lattice QCD evaluation of Euclidean four-point functions of vector currents.

These initial results include only the fully quark-connected contribution.
Particular attention is given to the case of forward scattering, which can be related via dispersion relations to the $\gamma^* \gamma^* \to$ hadrons cross section, and thus allows lattice data to be compared with phenomenology.
We also present a strategy for computing the hadronic light-by-light contribution to the muon anomalous magnetic moment.

Direct calculation of hadronic light-by-light scattering · Around

Built on

SciDAC, LHPC, UKQCD
2005
Earlier work this paper cites.
Muon g-2
2006
Earlier work this paper cites.
F. Jegerlehner and A. Nyffeler, The Muon g-2
Original
2009
Earlier work this paper cites.
J-PARC g-2
2011
Earlier work this paper cites.

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