22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

Hidden fine tuning in the quark sector of little higgs models

24 Jul 2010, 15:00
15m
Salle 242B ()

Salle 242B

Parallel Session Talk 10 - Beyond the Standard Model (theory and experimental searches) 10 - Beyond the Standard Model (theory and experimental searches)

Speaker

Prof. Benjamin Grinstein (University of California San Diego and CERN)

Description

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.

Primary author

Prof. Benjamin Grinstein (University of California San Diego and CERN)

Co-authors

Mr Patipan Uttayarat (University of California San Diego) Dr Randall Kelley (Harvard Univesiry)

Presentation Materials