Initial-Final-State Interference in the Z line-shape

Abstract

The uncertainty in the determination of the Z line-shape parameters coming from the precision of the calculation of the Initial-State Radiation and Initial--Final-State Interference is 2 10**(-4) for the total cross section sigma zero(had) at the Z peak, 0.15 MeV for the Z mass M Z, and 0.1 MeV for the Z width Gamma Z. Corrections to Initial--Final-State Interference beyond \Order{α^1} are discussed.

10 pages LaTeX including 2 PostScript figures

References in corpus (1)

• Coherent Exclusive Exponentiation CEEX: the Case of the Resonant e+ e- Collision

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