Cross-section asymmetries around the Z peak

A simple model-independent formula for cross-section asymmetries A in fermion-pair production is derived, which may be used for the analysis of LEP~1 data, A = \sum_n A_n (s - M_Z^2)^n. The coefficient A_0 depends on the Z boson exchange, A_1 additionally on the \gamma Z interference, while the higher-order contributions are practically redundant. QED corrections are taken into account, and relations to other approaches are indicated.A simple model-independent formula for cross-section asymmetries $A$ in fermion-pair production is derived, which may be used for the analysis of LEP1 data, $A = \sum_n A_n (s - M_Z~2)~n$. The coefficient $A_0$ depends on the $Z$ boson exchange, $A_1$ additionally on the $\gamma Z$ interference, while the higher-order contributions are practically redundant. QED corrections are taken into account, and relations to other approaches are indicated.A simple model-independent formula for cross-section asymmetries A in fermion-pair production is derived, which may be used for the analysis of LEP 1 data, A = Σ n A n ( s − M Z 2 ) n . The coefficient A 0 depends on the Z boson exchange, A 1 additionally on the γZ interference, while the higher-order contributions are practically redundant. QED corrections are taken into account, and relations to other approaches are indicated