Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-10-29
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 2 figures. Contribution to the proceedings of the "Strong and Electroweak Matter 2008 (SEWM 08)" conference, Amsterd
Scientific paper
10.1016/j.nuclphysa.2009.01.022
The possibility that supersymmetry (SUSY) could be broken in a metastable vacuum has recently attracted renewed interest. In these proceedings we will argue that metastability is an attractive and testable scenario. The recent developments were triggered by the presentation of a simple and calculable model of metastable SUSY breaking by Intriligator, Seiberg and Shih (ISS), which we will briefly review. One of the main questions raised by metastability is, why did the universe end up in this vacuum. Using the ISS model as an example we will argue that in a large class of models the universe is automatically driven into the metastable state during the early hot phase and gets trapped there. This makes metastability a natural option from the cosmological point of view. However, it may be more than that. The phenomenologically required gaugino masses require the breaking of R-symmetry. However, in scenarios with a low supersymmetry breaking scale, e.g., gauge mediation a powerful theorem due to Nelson and Seiberg places this at odds with supersymmetry breaking in a truely stable state and metstability becomes (nearly) inevitable. Turning around one can now experimentally test whether gauge mediation is realised in nature thereby automatically testing the possibility of a metastability of the vacuum. Indeed, already the LHC may give us crucial information about the stability of the vacuum.
No associations
LandOfFree
Metastable SUSY Breaking - Predicting the Fate of the Universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Metastable SUSY Breaking - Predicting the Fate of the Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metastable SUSY Breaking - Predicting the Fate of the Universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-72451