Low-energy moments of non-diagonal quark current correlators at four loops
arXiv:1506.00900 · doi:10.1016/j.nuclphysb.2015.07.031
Abstract
We compute the leading four physical terms in the low-energy expansions of heavy-light quark current correlators at four-loop order. As a by-product we reproduce the corresponding top-induced non-singlet correction to the electroweak rho parameter.
13 pages, no figures. Extended discussion and added references
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