Holographic Electroweak Symmetry Breaking from D-branes
Abstract
We observe several interesting phenomena in a technicolor-like model of electroweak symmetry breaking based on the D4-D8-D8bar system of Sakai and Sugimoto. The benefit of holographic models based on D-brane configurations is that both sides of the holographic duality are well understood. We find that the lightest technicolor resonances contribute negatively to the Peskin-Takeuchi S-parameter, but heavy resonances do not decouple and lead generically to large, positive values of S, consistent with standard estimates in QCD-like theories. We study how the S parameter and the masses and decay constants of the vector and axial-vector techni-resonances vary over a one-parameter family of D8-brane configurations. We discuss possibilities for the consistent truncation of the theory to the first few resonances and suggest some generic predictions of stringy holographic technicolor models.
Cite
@article{arxiv.0704.3084,
title = {Holographic Electroweak Symmetry Breaking from D-branes},
author = {Christopher D. Carone and Joshua Erlich and Marc Sher},
journal= {arXiv preprint arXiv:0704.3084},
year = {2008}
}