A minimal Little Higgs model

Abstract

We discuss a Little Higgs scenario that introduces below the TeV scale just the two minimal ingredients of these models, a vectorlike T quark and a singlet component (implying anomalous couplings) in the Higgs field, together with a pseudoscalar singlet η. In the model, which is a variation of Schmaltz's simplest Little Higgs model, all the extra vector bosons are much heavier than the T quark. In the Yukawa sector the global symmetry is approximate, implying a single large coupling per flavour, whereas in the scalar sector it is only broken at the loop level. We obtain the one-loop effective potential and show that it provides acceptable masses for the Higgs h and for the singlet ηwith no need for an extra μterm. We find that m_ηcan be larger than m_h/2, which would forbid the (otherwise dominant) decay mode h -> ηη.

16 pages. References added, fine tuning analysis included. Version to appear in PRD

References in corpus (8)

• The Strongly-Interacting Light Higgs
• Little Higgs Models and Their Phenomenology
• Role of h --> eta eta in Intermediate-Mass Higgs Boson Searches at the Large Hadron Collider
• Distinguishing Little-Higgs Product and Simple Group models at the LHC and ILC
• Light pseudoscalar eta and H->eta eta decay in the simplest little Higgs mode
• Mini Little Higgs and Dark Matter
• Little Higgs models with a light T quark
• Higgs boson from the meta-stable SUSY breaking sector

Cited by in corpus (5)

• The Bestest Little Higgs
• Little Higgs theory confronted with the LHC Higgs data
• Lepton flavor violation in the Simplest Little Higgs model
• Extra Higgs bosons in ttbar production at the LHC
• Higgs bosons in ttbar production