Constraining parameter space of the Little Higgs model by data of tera-Z factory and ILC

Abstract

The Standard Model prediction on the forward-backward asymmetry for $b\bar{b}$ production ($A_{FB}^b$) is well consistent with the data of LEP I at the Z-pole, but deviates from the data at $\sqrt{s}=8993$ GeV which are slightly away from the pole. This deviation implies that there still is room for new physics. We calculate the $A_{FB}^b$ at vicinity of Z-pole in the Little Higgs Model as well as other measurable parameters such as $R_b$ and $R_c$, by which we may constrain the parameter space of the Little Higgs Model. This can be tested in the newly proposed tera-Z factory. With the fitted parameters we further make predictions on $A_{FB}^b$ and $A_{FB}^t$ for $t\bar{t}$ production at the ILC energy.

18 pages, 8 figures and 3 tables. Radical changes including the title of the work are made and more reference added

References in corpus (11)

• Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs
• Forward-backward asymmetry in top quark production from light colored scalars in SO(10) model
• Tevatron Asymmetry of Tops in a W',Z' Model
• Forward-backward asymmetry and differential cross section of top quark in flavor violating $Z^{\prime }$ model at $\mathcal{O}({\alpha }_s^2{\alpha }_X)$
• Top quark forward-backward asymmetry at Tevatron and its implications at the LHC
• Same-sign Tops: A Powerful Diagnostic Test for Models of New Physics
• New gauge boson $B_H$ production associated with W boson pair via $\gamma \gamma$ collision in the littlest Higgs model
• Probing the lightest new gauge boson $B_H$ in the littlest Higgs model via the processes $\gamma \gamma \to f\bar{f}{B}_H$ at the ILC
• Decays of the Littlest Higgs Z_H and the Onset of Strong Dynamics
• Precise predictions for $A_H{q}_{-}$ associated production in the littlest Higgs model with $T$ parity at the LHC
• Using the Higgs boson to probe the littlest Higgs model with T-parity through $Z_H{W}_H$ production at the LHC

Cited by in corpus (1)

• Exposing Dark Sector with Future Z-Factories