Fourth generation quark mass limits in CKM-element space
High Energy Physics - Phenomenology
2015-05-27 v1 High Energy Physics - Experiment
Abstract
We present a reanalysis of CDF data to extend limits on individual fourth-generation quark masses from particular flavor-mixing rates to the entire space of possible mixing values. Measurements from CDF have set individual limits on masses, and , at the level of -- GeV assuming specific and favorable flavor-mixing rates. We consider the space of possible values for the mixing rates and find that the CDF data imply limits of GeV and greater over a wide range of mixing scenarios. We also analyze the limits from the perspective of a four-generation CKM matrix. We find that present experimental constraints on CKM elements do not suggest further constraints on fourth-generation quark masses.
Cite
@article{arxiv.1101.4976,
title = {Fourth generation quark mass limits in CKM-element space},
author = {Christian J. Flacco and Daniel Whiteson and Matthew Kelly},
journal= {arXiv preprint arXiv:1101.4976},
year = {2015}
}