Production of and in the littlest Higgs model with T-parity at High Energy Colliders

Bingfang Yang; Jinzhong Han; Xiantu Zhang

doi:10.1140/epjc/s10052-013-2639-8

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2023 Impact factor 4.2

Particles and Fields

Eur. Phys. J. C (2013) 73: 2639
https://doi.org/10.1140/epjc/s10052-013-2639-8

Regular Article - Theoretical Physics

Production of $Z t \bar{t}$ and $Z t \bar{T}^{+}$ in the littlest Higgs model with T-parity at High Energy Colliders

Bingfang Yang², Jinzhong Han¹^* and Xiantu Zhang¹

¹ Department of Physics and Electronic Engineering, Zhoukou Normal University, Henan, 466001, China
² Basic Teaching Department, Jiaozuo University, Jiaozuo, 454000, China

^* e-mail: hanjinzhongxx@gmail.com

Received: 7 September 2013
Revised: 16 October 2013
Published online: 10 December 2013

Abstract

In the framework of the littlest Higgs model with T-parity (LHT), we study the process $pp\rightarrow Zt\bar{t}$ at the LHC and the process $e^{+}e^{-}\rightarrow Zt\bar{t}$ at the ILC. Besides, we study the effects in the new production channel, $Z t \bar{T}^{+}$ or $Z T^{+}\bar{t}$ production, at the LHC. We calculate the $Zt\bar{t}$ production cross section and the relative correction, and we present some kinematic distributions. In the allowed parameter space, we find that the relative corrections of the $Zt\bar{t}$ production cross section are significant and may be a good probe for the LHT model. Compared with $Zt \bar{t}$ production, we find that the $Z t \bar{T}^{+}$ production can have a sizable production rate for a T ⁺ below TeV scale, which will influence the $Zt \bar{t}$ events.