Leading order hadronic contribution to g-2 from twisted mass QCD

Details Leading order hadronic contribution to g-2 from twisted mass QCD Leading order hadronic contribution to g-2 from twisted mass QCD

2010-11-18

arxiv.org/abs/1011.4231v1

PoS Lattice2010:155,2010

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice 2010 proceedings

Scientific paper

We calculate the leading order hadronic contribution to the muon anomalous magnetic moment using twisted mass lattice QCD. The pion masses range from 330 MeV to 650 MeV. We use two lattice spacings, a=0.079 fm and 0.063 fm, to study lattice artifacts. Finite-size effects are studied for two values of the pion mass, and we calculate the disconnected contributions for four ensembles. Particular attention is paid to the dominant contributions of the vector mesons, both phenomenologically and from our lattice calculation.

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