Two-loop fermionic electroweak corrections to the Z-boson width and production rate
High Energy Physics - Phenomenology
2014-01-24 v2
Abstract
Improved predictions for the Z-boson decay width and the hadronic Z-peak cross-section within the Standard Model are presented, based on a complete calculation of electroweak two-loop corrections with closed fermion loops. Compared to previous partial results, the predictions for the Z width and hadronic cross-section shift by about 0.6 MeV and 0.004 nb, respectively. Compact parametrization formulae are provided, which approximate the full results to better than 4 ppm.
Keywords
Cite
@article{arxiv.1310.2256,
title = {Two-loop fermionic electroweak corrections to the Z-boson width and production rate},
author = {A. Freitas},
journal= {arXiv preprint arXiv:1310.2256},
year = {2014}
}
Comments
7 pages; v2: few typos fixed and minor corrections of numbers in tables