Timelike and spacelike QCD characteristics of the $e^+e^-$ annihilation process

Details Timelike and spacelike QCD characteristics of the $e^+e^-$ annihilation process Timelike and spacelike QCD characteristics of the $e^+e^-$ annihilation process

2000-03-03

arxiv.org/abs/hep-ph/0003031v1

Eur.Phys.J.C13:497-502,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 4 eps figures, revtex

Scientific paper

10.1007/s100520050712

We consider the Adler $D$-function, which is defined in the spacelike region, and the $e^+e^-$ annihilation ratio smeared, according to the Poggio, Quinn, and Weinberg method, which is determined for timelike argument. We show that the method of the nonperturbative $a$-expansion allows one to describe these Euclidean and Minkowskian characteristics of the process of $e^+e^-$ annihilation down to the lowest energy scales.

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