Phenomenology of Littlest Higgs Model with T-parity: including effects of T-odd fermions

Details Phenomenology of Littlest Higgs Model with T-parity: including effects of T-odd fermions Phenomenology of Littlest Higgs Model with T-parity: including effects of T-odd fermions

2006-09-19

arxiv.org/abs/hep-ph/0609179v2

Phys.Rev.D74:115020,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevD.74.115020

We study the collider phenomenology of a Littlest Higgs model with T-parity. We first stress the important role of the T-odd SU(2) doublet fermions (introduced to make the model T-parity invariant) in high energy scattering processes, such as $q\bar{q}\to W_H^+ W_H^-$ where $W_H^\pm$ are the T-odd partners of $W$-bosons. Because the mass of the T-odd SU(2) doublet fermions cannot be too heavy to be consistent with low energy data, they can be copiously produced at the CERN Large Hadron Collider (LHC). Therefore, we study the collider phenomenology of the model with emphasis on the contributions of the T-odd fermion to the production of the heavy T-parity partners (either bosons or fermions) of the usual particles at the LHC. The production cross sections and the decay branching ratios of the new heavy particles are classified and various experimental signatures are discussed.

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