Experimental Probes of Spacetime Geometries


Formale Metadaten

Titel Experimental Probes of Spacetime Geometries
Autor JoAnne Hewett
Herausgeber Fermi National Accelerator Laboratory (Fermilab)
Erscheinungsjahr 2009
Sprache Englisch

Inhaltliche Metadaten

Fachgebiet Physik
Abstract A novel approach which exploits the geometry of extra spacetime dimensions has been recently proposed as a means to resolving the hierarchy problem, i.e., the large energy gap that separates the electroweak scale and the scale where gravity becomes strong. I will describe two models of this type: one where the apparent hierarchy is generated by a large volume for the extra dimensions, and a second where the observed hierarchy is created by an exponential warp factor which arises from a non-factorizable geometry. Both scenarios have concrete and distinctive phenomenological tests at the TeV scale. I will describe the classes of low-energy and collider signatures for both models, summarize the present constraints from experiment, and examine the ability of future accelerators to probe their parameter space.

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