# Precise determination of $$\alpha _{S}(M_Z)$$ from a global fit of energy–energy correlation to NNLO+NNLL predictions

The European Physical Journal C, Jun 2018

We present a comparison of the computation of energy–energy correlation in $$e^{+}e^{-}$$ collisions in the back-to-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 $$\alpha _{S}(M_{Z})= 0.11750\pm 0.00018 {\text{( } exp.)}\pm 0.00102{\text{( }hadr.)}\pm 0.00257{\text{( }ren.)}\pm 0.00078{\text{( }res.)}$$.

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Adam Kardos, Stefan Kluth, Gábor Somogyi, Zoltán Tulipánt, Andrii Verbytskyi. Precise determination of $$\alpha _{S}(M_Z)$$ from a global fit of energy–energy correlation to NNLO+NNLL predictions, The European Physical Journal C, 2018, 498, DOI: 10.1140/epjc/s10052-018-5963-1