b -> s Decays in a model with Z-mediated flavor changing neutral current
High Energy Physics - Phenomenology
2012-12-07 v1
Abstract
In the scenario with Z mediated flavor changing neutral current occurring at the tree level due to the addition of a vector-like isosinglet down-type quark d' to the SM particle spectrum, we perform a chi square fit using the flavor physics data and obtain the best fit value along with errors of the tree level Zbs coupling, U_{sb}. The fit indicates that the new physics coupling is constrained to be small: we obtain |U_{sb}| <= 3.40 X 10^{-4} at 3 sigma. Still this does allow for the possibility of new physics signals in some of the observables such as semileptonic CP asymmetry in Bs decays.
Cite
@article{arxiv.1209.1987,
title = {b -> s Decays in a model with Z-mediated flavor changing neutral current},
author = {Ashutosh Kumar Alok and Shireen Gangal},
journal= {arXiv preprint arXiv:1209.1987},
year = {2012}
}
Comments
9 pages, no figures