Mass Corrections to the Vector Current Correlator

Details Mass Corrections to the Vector Current Correlator Mass Corrections to the Vector Current Correlator

1997-04-03

arxiv.org/abs/hep-ph/9704222v1

Nucl.Phys. B503 (1997) 339-353

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTeX, 11 postscript figures. The complete paper, including figures, is also available via anonymous ftp at ftp://

Scientific paper

10.1016/S0550-3213(97)00383-0

Three-loop QCD corrections to the vector current correlator are considered.
The large momentum procedure is applied in order to evaluate mass corrections
up to order $(m^2/q^2)^6$. The inclusion of the first seven terms to the ratio
$R=\sigma(e^+e^- \to hadrons)/\sigma(e^+e^- \to \mu^+\mu^-)$ leads to reliable
predictions from the high energy region down to relatively close to threshold.

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