Testing flavor-changing neutral currents in the rare decays t->cViVj
High Energy Physics - Phenomenology
2014-11-17 v2
Abstract
We discuss the Flavor-Changing Neutral Current (FCNC) decays of the top quark t -> c Vi Vj (Vi=gamma, Z, g) in the framework of the Standard Model (SM) and in a two-higgs doublet model (2HDM) with tree-level FCNC couplings. While in the SM the expected branching ratios are extremelly small, in the 2HDM they may be sizable, of order 10^(-5) - 10^(-5), and thus accesible at the CERN LHC. We conclude with the interesting observation that the FCNC decay modes may not be equally suppressed as their corresponding decays t ->c Vi in this 2HDM.
Keywords
Cite
@article{arxiv.hep-ph/9903299,
title = {Testing flavor-changing neutral currents in the rare decays t->cViVj},
author = {J. L. Diaz-Cruz and M. A. Perez and G. Tavares-Velasco and J . J. Toscano},
journal= {arXiv preprint arXiv:hep-ph/9903299},
year = {2014}
}
Comments
RevTeX, 2 epsi figures, 10 pgs. Comments and references added. Submitted to Physical Review D