Complete fermionic two-loop results for the M_W-M_Z interdependence
高能物理 - 唯象学
2011-07-19 v3
摘要
The complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e. no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of an expansion up to next-to-leading order in the top-quark mass. The predictions are found to agree with each other within about 5 MeV. A simple parameterization of the new result is presented, approximating the full result better than 0.4 MeV for M_H < 1 TeV.
引用
@article{arxiv.hep-ph/0007091,
title = {Complete fermionic two-loop results for the M_W-M_Z interdependence},
author = {A. Freitas and W. Hollik and W. Walter and G. Weiglein},
journal= {arXiv preprint arXiv:hep-ph/0007091},
year = {2011}
}
备注
13 pages; error in the numerical evaluation of a specific two-loop vacuum integral corrected