Upper Limits on Electric and Weak Dipole Moments of W-Boson
High Energy Physics - Phenomenology
2015-03-17 v2
Abstract
The total cross-sections of the reaction e+e- --> W+W-, as measured at LEP-II at centre-of-mass energies between 183 and 207 GeV are used to derive the upper limits on the parameters of CP-violating (P-odd and C-even) triple gauge-boson couplings WW\gamma and WWZ. The 95% CL limits |\widetilde{\kappa}_Z|<0.13 and |\widetilde{\lambda}_Z|<0.31 are obtained assuming local SU(2)_L x U(1)_Y gauge invariance. Our results are comparable with the previous ones obtained through the analysis of the W decay products. We also discuss the upper limits on the electric dipole moment (EDM) of the W-boson, which follow from the precision measurements of the electron and neutron EDM.
Keywords
Cite
@article{arxiv.1010.2018,
title = {Upper Limits on Electric and Weak Dipole Moments of W-Boson},
author = {A. E. Blinov and A. S. Rudenko},
journal= {arXiv preprint arXiv:1010.2018},
year = {2015}
}
Comments
9 pages, 4 figures