The Lower Bound on the Neutralino-Nucleon Cross Section
High Energy Physics - Phenomenology
2007-05-23 v3
Abstract
We examine if there is a lower bound on the direct detection cross section for the neutralino dark matter in the MSSM. If we impose the minimal supergravity boundary conditions as well as the "naturalness" condition, in particular m_{1/2} < 300 GeV, we show that there is a lower bound of 10^{-46}cm^2 on the cross section for neutralino scattering off of a proton. We also clarify the origin for the lower bound. Relaxing either of the assumptions, however, can lead to much smaller cross sections.
Cite
@article{arxiv.hep-ph/0008022,
title = {The Lower Bound on the Neutralino-Nucleon Cross Section},
author = {V. Mandic and A. T. Pierce and P. Gondolo and H. Murayama},
journal= {arXiv preprint arXiv:hep-ph/0008022},
year = {2007}
}
Comments
10 pages, 7 figures, PS available at http://phyweb.lbl.gov/theorygroup/papers/46431.ps Corrected minor bug in code. Numerical results changed slightly