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| + | ====== TTP04-29 Vacuum polarization in pQCD: first complete O(\alpha_s^4) result ====== | ||
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| + | <hidden TTP04-29 | ||
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| + | to the (absorptive part of) the vacuum polarization function. The | ||
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| + | full O( \als^4 | ||
| + | of e^+ e^- annihilation into hadrons. We compare | ||
| + | our results with predictions following from various optimization | ||
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| + | </ | ||
| + | |**P.A. Baikov, K.G. Chetyrkin and J.H.K\" | ||
| + | |** Nucl. Phys. Proc. Suppl. | ||
| + | | {{preprints: | ||
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