Atomic parity violation in cesium and implications for the 3 - 3 - 1 models

Details Atomic parity violation in cesium and implications for the 3 - 3 - 1 models Atomic parity violation in cesium and implications for the 3 - 3 - 1 models

2000-10-18

arxiv.org/abs/hep-ph/0010204v2

Phys.Lett.B502:63-68,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, Journal version

Scientific paper

10.1016/S0370-2693(01)00167-8

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 $Z'$ mass at a range from 1.4 TeV to 2.6 TeV. The allowed regions for the Z-Z'$mixing angle are also derived.

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