Atomic parity violation in cesium and implications for the 3 - 3 - 1 models
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
The parity violation in cesium atom is analysed in the framework of the models based on the SU(3)_C X SU(3)_L X U(1)_N gauge group. It is shown that in the minimal version, the main contribution to a deviation of weak charge \Delta Q_W due to direct Z' exchange is negative. New data on parity violation in the cesium atom seems not favour to the minimal version, while it gets a positive value in the version with right-handed neutrinos. We obtain a bound on the mass at a range from 1.4 TeV to 2.6 TeV. The allowed regions for the Z-Z'$mixing angle are also derived.
Cite
@article{arxiv.hep-ph/0010204,
title = {Atomic parity violation in cesium and implications for the 3 - 3 - 1 models},
author = {Hoang Ngoc Long and Le Phuoc Trung},
journal= {arXiv preprint arXiv:hep-ph/0010204},
year = {2008}
}
Comments
7 pages, Journal version