The mixing of two-pion and vector-meson states using staggered fermions
Proceedings of The 40th International Symposium on Lattice Field Theory — PoS(LATTICE2023)(2023)
摘要
In this study we employ staggered fermions to calculate the two-pion taste
singlet states at rest. Leveraging the Clebsch-Gordan coefficients of the
symmetry group associated with staggered fermions, we effectively compute the
ππ contributions to the resting ρ-meson correlator. To discern the
distinct energy states involved, we adopt a generalized eigenvalue
problem-solving approach. This work will provide insight into the important
role played by the two-pion contribution to the anomalous magnetic moment of
the muon.
In this paper we present our group theoretic considerations and preliminary
results on the contribution of two-pion states to the rho meson correlation
function.
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