We consider the possibility that the soft supersymmetry-breaking parameters m1 / 2 and m0 of the MSSM are universal at some scale Min below the supersymmetric grand unification scale MGUT, as might occur in scenarios where either the primordial supersymmetry-breaking mechanism or its communication to the observable sector involve a dynamical scale below MGUT. We analyze the (m1 / 2, m0) planes of such sub-GUT CMSSM models, noting the dependences of phenomenological, experimental and cosmological constraints on Min. In particular, we find that the coannihilation, focus-point and rapid-annihilation funnel regions of the GUT-scale CMSSM approach and merge when Min ∼ 1012 GeV. We discuss sparticle spectra and the possible sensitivity of LHC measurements to the value of Min.
|Original language||English (US)|
|Number of pages||11|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - Nov 16 2006|
Bibliographical noteFunding Information:
The work of K.A.O. and P.S. was supported in part by DOE grant DE-FG02-94ER-40823.