Comparison of a new calculation of energy-energy correlations with e+e---> hadrons data at the Z0 resonance.
نویسندگان
چکیده
Resonance The SLD Collaboration * Submitted to Physical Review D (Rapid Communications). ABSTRACT We have compared a new QCD calculation by Clay and Ellis of energy-energy correlations (EEC) and their asymmetry (AEEC) in e + e − annihilation into hadrons with data collected by the SLD experiment at SLAC. From fits of the new calculation, complete at O(α 2 s), we obtained α s (M 2 Z) = 0.1184 ± 0.0031(exp.)±0.0129(theory) (EEC) and α s (M 2 Z) = 0.1120 ± 0.0034(exp.)±0.0036(theory) (AEEC). The EEC result is significantly lower than that obtained from comparable fits using the O(α 2 s) calculation of Kunszt and Nason.
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عنوان ژورنال:
- Physical review. D, Particles and fields
دوره 52 7 شماره
صفحات -
تاریخ انتشار 1995