Initial-Final-State Interference in the Z line-shape
High Energy Physics - Phenomenology
2009-10-31 v1
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{\alpha^1} are discussed.
Cite
@article{arxiv.hep-ph/9907547,
title = {Initial-Final-State Interference in the Z line-shape},
author = {S. Jadach and B. Pietrzyk and E. Tournefier and B. F. L. Ward and Z. Was},
journal= {arXiv preprint arXiv:hep-ph/9907547},
year = {2009}
}
Comments
10 pages LaTeX including 2 PostScript figures