Little Higgs models and T parity

MAXIM PERELSTEIN

Cornell Institute for High-Energy Phenomenology,

Department of Physics, Cornell University, Ithaca, NY 14853, USA

E-mail: maxim@lepp.cornell.edu

Abstract. Little Higgs models are an interesting extension of the

Standard Model at the TeV scale. They provide a simple and attractive

mechanism of electroweak symmetry breaking. We review one of the

simplest models of this class, the Littlest Higgs model, and its

extension with $T$ parity. The model with $T$ parity

satisfies precision electroweak constraints

without fine-tuning, contains an attractive dark matter candidate,

and leads to interesting phenomenology at the Large Hadron Collider

(LHC).

Keywords. Electroweak symmetry breaking; beyond the Standard Model.

PACS Nos 12.60.-i; 12.60.Cn; 12.60.Fr; 12.60.Rc