Dynamical Electroweak Superconductivity from a Composite Little Higgs.pdfVIP

February 7, 2008 10:37 WSPC/Trim Size: 9in x 6in for Proceedings nelson 3 0 0 DYNAMICAL ELECTROWEAK SUPERCONDUCTIVITY 2 FROM A COMPOSITE LITTLE HIGGS r p A A. E. NELSON∗ 4 Department of Physics, 1 Box 1560, University of Washington, v Seattle, WA 98195-1560, USA 6 3 0 4 I describe, from the bottom up, a sequence of natural effective field theories. Below 0 a TeV we have the minimal standard model with a light Higgs, and an extra neutral 3 scalar. In the 1-10 TeV region these scalars are part of a multiplet of pseudo 0 Nambu-Goldstone Bosons (NGBs). Interactions with additional TeV mass scalars, / gauge bosons, and vector-like charge 2/3 quarks stabilize the Higgs mass squared h parameter without finetuning. Electroweak superconductivity may be determined p in this effective theory as a UV insensitive vacuum alignment problem. Above the - p 10 TeV scale we have strongly coupled new gauge interactions. e h : v 1. Introduction i X A new mechanism for electroweak superconductivity, dubbed the “little r Higgs” [2], was recently discovered via dimensional deconstruction [3, 4]. a This mechanism has since been realized in various simple nonlinear sigma models [5–10]. In this talk, I review some of these developments, and