Mainz 2014 – scientific programme

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T: Fachverband Teilchenphysik

T 104: Jenseits des Standardmodells (Theorie) 3

T 104.1: Talk

Thursday, March 27, 2014, 16:45–17:00, P6

Introduction to Models with a Small and Warped Extra Dimension — Juliane Hahn, •Clara Hörner, Raoul Malm, Matthias Neubert, Kristiane Novotny, and Christoph Schmell — PRISMA Cluster of Excellence & Mainz Institute for Theoretical Physics, Johannes Gutenberg University, 55099 Mainz, Germany

After the discovery of the Higgs boson in July 2012, a solution to the hierarchy problem - the question why the electroweak scale is so low compared to the Planck scale - is more required than ever. Models, which were first formulated by L. Randall and R. Sundrum in 1998, extending the Standard Model of Particle Physics (SM) by a Planck-lengths small and warped extra dimension offer a promising approach. Moreover, these models allow an explanation of the quark flavor structure of the SM in a natural way. All SM fields except the Higgs boson are assumed to spread out in the extra dimension and Kaluza-Klein-particles are predicted as additional particles with higher masses. Predictions for present accelerator experiments can be calculated within this setup, e.g. the loop-mediated decay of the Higgs boson into two photons, where virtual KK-particles could lead to sizeable contributions. The setup of a Minimal RS model and an extended model with a Custodial symmetry, predicting additional five-dimensional fields to better handle with the electroweak T-parameter, will be presented in this talk. It will form an introduction for following presentations of the Higgs to two photons decay within the RS setup.