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We present a comparison of the computation of energy–energy correlation in e+e− collisions in the backto-back region at next-to-next-to-leading logarithmic accuracy matched with the next-to-next-to-leading order perturbative prediction to LEP, PEP, PETRA, SLC and TRISTAN data. With these predictions we perform an extraction of the strong coupling constant taking into account non-perturbative effects modelled with Monte Carlo event generators. The final result at NNLO+NNLL precision is αS(MZ ) = 0.11750 ± 0.00018(exp.) ± 0.00102(hadr.) ± 0.00257(ren.) ± 0.00078(res.).

Precise determination of αS( $ m_{Z^0 } $ ) from a global fit of energy-energy correlations to NNLO+NNLL predictions

Precise determination of α_S( $ m_{Z^0 } $ ) from a global fit of energy-energy correlations to NNLO+NNLL predictions