https://doi.org/10.1140/epjc/s10052-014-3121-y
Regular Article - Theoretical Physics
Split supersymmetry under GUT and current dark matter constraints
1
Department of Physics and Engineering, Zhengzhou University, Zhengzhou, 450000, People’s Republic of China
2
Institute of Theoretical Physics, College of Applied Science, Beijing University of Technology, Beijing, 100124, People’s Republic of China
3
Institute of Theoretical Physics China, Chinese Academy of Sciences, Beijing, 100080, People’s Republic of China
* e-mail: feiwang@zzu.edu.cn
Received:
28
June
2014
Accepted:
7
October
2014
Published online:
21
October
2014
We recalculate the two-loop beta functions for three gauge couplings taking into account all low energy threshold corrections in split supersymmetry (split-SUSY) which assumes a very high scalar mass scale 
. We find that in split-SUSY with a gaugino mass unification assumption and with a large the gauge coupling unification requires a lower bound on the gaugino mass. Combined with the constraints from the dark matter relic density and direct detection limits, we find that split-SUSY is very restricted and for dark matter mass below 1 TeV the allowed parameter space can be fully covered by XENON-1T(2017).
© SIF and Springer-Verlag Berlin Heidelberg, 2014
