One Loop Renormalization of the Littlest Higgs Model

Details One Loop Renormalization of the Littlest Higgs Model One Loop Renormalization of the Littlest Higgs Model

2010-11-02

arxiv.org/abs/1011.0682v1

JHEP 1102:089,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 17 eps figures

Scientific paper

10.1007/JHEP02(2011)089

In Little Higgs models a collective symmetry prevents the Higgs from acquiring a quadratically divergent mass at one loop. This collective symmetry is broken by weakly gauged interactions. Terms, like Yukawa couplings, that display collective symmetry in the bare Lagrangian are generically renormalized into a sum of terms that do not respect the collective symmetry except possibly at one renormalization point where the couplings are related so that the symmetry is restored. We study here the one loop renormalization of a prototypical example, the Littlest Higgs Model. Some features of the renormalization of this model are novel, unfamiliar form similar chiral Lagrangian studies.

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