Light stops in the MSSM parameter space
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We consider the regions of the MSSM parameter space where the top squarks become light and even may be the LSP. This happens when the triple scalar coupling A becomes very big compared to m_0. We show that in this case the requirement that the LSP is neutral imposes noticeable constraint on the parameter space excluding low m_0 and m_{1/2} similar to constraint from the Higgs mass limit. In some cases these constraints overlap. This picture takes place in a wide region of \tan\beta. In a narrow band close to the border line the stops are long-lived particles and decay into quarks and neutralino (chargino). The cross-section of their production at LHC via gluon fusion mechanism in this region may reach a few pb.
Keywords
Cite
@article{arxiv.0704.1429,
title = {Light stops in the MSSM parameter space},
author = {A. V. Gladyshev and D. I. Kazakov and M. G. Paucar},
journal= {arXiv preprint arXiv:0704.1429},
year = {2007}
}
Comments
10 pages, 10 eps figures