2008/03/27 by Xuelei Wang, Yanju Zhang, Huiling Jin +1 · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Electroweak interaction #Fermion #Higgs boson #Higgs field #High-Energy Particle Collisions Research #Large Hadron Collider #Little Higgs #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Production (economics) #Quark #Top quark #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2008.11.002
published as Nucl.Phys.B810:226-245,2009 · 20 pages, 5 figures
arxiv created 2008/03/27 · openalex publication_date 2008/11/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The littlest Higgs model with discrete symmetry named “T-parity” (LHT) is an interesting new physics model which does not suffer strong constraints from electroweak precision data. One of the important features of the LHT model is the existence of new source of FC interactions between the SM fermions and the mirror fermions. These FC interactions can make significant loop-level contributions to the couplings tcV, and furthermore enhance the cross sections of the FC single-top quark production processes. In this paper, we study some FC single-top quark production processes, pp→tc¯ and pp→tV, at the LHC in the LHT model. We find that the cross sections of these processes strongly depend on the mirror quark masses. The processes pp→tc¯ and pp→tg have large cross sections with heavy mirror quarks. The observation of these FC processes at the LHC is certainly the clue of new physics, and further precise measurements of the cross sections can provide useful information about the free parameters in the LHT model, specially about the mirror quark masses.