We present the estimation of the long distance behaviour of the vector-vector correlator computed
on a lattice QCD ensemble generated with 2 + 1 flavour physical Wilson clover quarks. The long
distance regime of the correlator is dominated by multi-hadronic scattering states. We reconstruct
the correlator in this regime using the ๐๐ scattering states in the ๐ผ = 1 channel. The vector-vector
correlator appears in the integrand to estimate the hadronic vacuum polarization contributions to
the anomalous magnetic moment of the muon. Therefore, an improved estimation of the correlator
will help resolve the tension between (๐ โ 2)๐ experiment and theory.
Volume 430 -
The 39th International Symposium on Lattice Field Theory (LATTICE2022) -
Hadron Spectroscopy and Interactions
The long-distance behaviour of the vector-vector correlator from ๐
๐
scattering
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Published on:
April 06, 2023
Abstract
DOI: https://doi.org/10.22323/1.430.0073
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.