Is the stop mass below the top mass?
High Energy Physics - Phenomenology
2011-07-19 v1
Abstract
It is shown that a top mass of 174+/-17 GeV, as quoted recently by the CDF Collaboration, constrains the mixing angle between the Higgs doublets in the Minimal Supersymmmetric extension of the Standard Model (MSSM) to: 1.2<tan beta<5.5 at the 90% C.L.. The most probable value corresponds to tan beta = 1.56; such a small value causes a large mixing in the stop sector and the lightest stop is likely to be below the top mass. In this case the stop production in pp_bar collisions would contribute to the top signature, thus providing a possible explanation for the large effective tt_bar cross section observed by CDF.
Cite
@article{arxiv.hep-ph/9405419,
title = {Is the stop mass below the top mass?},
author = {W. de Boer and R. Ehret and D. I. Kazakov},
journal= {arXiv preprint arXiv:hep-ph/9405419},
year = {2011}
}
Comments
latex + 2 eps figs, 14 pages, IEKP-KA/94-07