6533b7dbfe1ef96bd1271338

RESEARCH PRODUCT

Lattice calculations of the leading hadronic contribution to g-2

Hartmut WittigAndreas JüttnerBenjamin JägerMichele Della Morte

subject

Quantum chromodynamicsPhysicsParticle physicsPionMuonAnomalous magnetic dipole momentHigh Energy Physics::LatticeHadronLattice field theoryFermionLattice QCD

description

We report on our ongoing project to calculate the leading hadronic contribution to the anomalous magnetic moment of the muon aHLO μ using two dynamical flavours of non-perturbatively O(a) improved Wilson fermions. In this study, we changed the vacuum polarisation tensor to a combination of local and point-split currents which significantly reduces the numerical effort. Partially twisted boundary conditions allow us to improve the momentum resolution of the vacuum polarisation tensor and therefore the determination of the leading hadronic contribution to (g− 2)μ . We also extended the range of ensembles to include a pion mass below 200MeV which allows us to check the non-trivial chiral behaviour of aHLO μ .

yearjournalcountryeditionlanguage
2012-12-20Proceedings of The 30th International Symposium on Lattice Field Theory — PoS(Lattice 2012)
https://doi.org/10.22323/1.164.0175