Abstract
We have computed, to first order in α s and lowest order in α EW, the effect of strong interactions on polarized and unpolarized asymmetries off the process e +e − → hadrons. We find, for the fully integrated quantities neglecting systematically the quark masses, that the longitudinal polarization asymmetry is completely independent of α s while the other asymmetries are not. We then compute “two-jet” asymmetries and find that the transverse polarization asymmetry becomes independent of α s as well, and that the α s coefficient in the forward-backward asymmetry is drastically reduced. This important fact which is, to a large extent, independent of the specific definition of two-jet events that is chosen, could allow us to use the latter quantities as good candidates for isolating non-strong interaction dependent effects.
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