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arXiv · 0904.1622

Hidden fine tuning in the quark sector of little higgs models

Benjamín Grinstein·Randall Kelley·Patipan Uttayarat
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Abstract

In little higgs models a collective symmetry prevents the higgs from acquiring a quadratically divergent mass at one loop. By considering first the littlest higgs model we show that this requires a fine tuning: the couplings in the model introduced to give the top quark a mass do not naturally respect the collective symmetry. We show the problem is generic: it arises from the fact that the would be collective symmetry of any one top quark mass term is broken by gauge interactions.

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Benjamín Grinstein, Randall Kelley, Patipan Uttayarat. 2009-04-10. Hidden fine tuning in the quark sector of little higgs models. https://doi.org/10.1088/1126-6708/2009/09/040

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