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

We consider the back-to-back region in the energy-energy correlation in e+e- collisions. We present the explicit expression of the O (αS2) logarithmically enhanced contributions up to next-to-next-to-leading logarithmic accuracy. We study the impact of the results in a detailed comparison with preci...

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Detalles Bibliográficos
Autores principales: de Florian, D., Grazzini, M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05503213_v704_n1-2_p387_deFlorian
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We consider the back-to-back region in the energy-energy correlation in e+e- collisions. We present the explicit expression of the O (αS2) 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 αSMZ) is in good agreement with the current world average. © 2004 Elsevier B.V. All rights reserved.

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