Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-06-30
Phys.Lett.B642:389-399,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, 14 figures
Scientific paper
10.1016/j.physletb.2006.09.043
We consider the possibility that the soft supersymmetry-breaking parameters m_{1/2} and m_0 of the MSSM are universal at some scale M_{in} below the supersymmetric grand unification scale M_{GUT}, as might occur in scenarios where either the primordial supersymmetry-breaking mechanism or its communication to the observable sector involve a dynamical scale below M_{GUT}. We analyze the (m_{1/2}, m_0) planes of such sub-GUT CMSSM models, noting the dependences of phenomenological, experimental and cosmological constraints on M_{in}. In particular, we find that the coannihilation, focus-point and rapid-annihilation funnel regions of the GUT-scale CMSSM approach and merge when M_{in} \sim 10^{12} GeV. We discuss sparticle spectra and the possible sensitivity of LHC measurements to the value of M_{in}.
Ellis John
Olive Keith A.
Sandick Pearl
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