English

CP Violation and the Width $Z\rightarrow b\bar{b}$

High Energy Physics - Phenomenology 2010-11-01 v1

Abstract

We discuss the effect of CP-violating ZbbˉZb\bar{b}, ZbbˉGZb\bar{b}G and ZbbˉγZb\bar{b}\gamma couplings on the width Γ(ZbbˉX)\Gamma(Z\rightarrow b\bar bX). The presence of such couplings leads in a natural way to an increase of this width relative to the prediction of the standard model. Various strategies of a direct search for such CP-violating couplings by using CP-odd observables are outlined. The number of ZZ bosons required to obtain significant information on the couplings in this way is well within the reach of present LEP experiments.

Keywords

Cite

@article{arxiv.hep-ph/9412268,
  title  = {CP Violation and the Width $Z\rightarrow b\bar{b}$},
  author = {W. Bernreuther and G. W. Botz and D. Bruss and P. Haberl and O. Nachtmann},
  journal= {arXiv preprint arXiv:hep-ph/9412268},
  year   = {2010}
}

Comments

18 pages, LaTeX, no figures

R2 v1 2026-07-22T14:23:49.473Z