The back-to-back region in e^+e^- energy--energy correlation

Details The back-to-back region in e^+e^- energy--energy correlation The back-to-back region in e^+e^- energy--energy correlation

2004-07-21

arxiv.org/abs/hep-ph/0407241v1

Nucl.Phys. B704 (2005) 387-403

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 8 figures

Scientific paper

10.1016/j.nuclphysb.2004.10.051

We consider the back-to-back region in the energy--energy correlation in e^+e^- collisions. We present the explicit expression of the O(as^2) logarithmically enhanced contributions up to next-to-next-to-leading logarithmic accuracy. We study the impact of the results in a detailed comparison with precise LEP and SLC data. We find that, when hadronization effects are taken into account as is customarily done in QCD analysis in e^+e^- annihilations, the extracted value of as(M_Z) is in good agreement with the current world average.

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