Search for single production of vector-like top partner decaying to Wb at collision

Bingfang Yang; Hongbo Shao; Jinzhong Han

doi:10.1140/epjc/s10052-018-5671-x

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2018) 78: 184
https://doi.org/10.1140/epjc/s10052-018-5671-x

Regular Article - Theoretical Physics

Search for single production of vector-like top partner decaying to Wb at $e\gamma$ collision

Bingfang Yang², Hongbo Shao³ and Jinzhong Han¹^*

¹ School of Physics and Telecommunications Engineering, Zhoukou Normal University, Henan, 466001, China
² College of Physics and Materials Science, Henan Normal University, Xinxiang, 453007, China
³ College of Science, Hebei Agricultural University, Baoding, 071000, China

^* e-mail: hanjinzhong@zknu.edu.cn

Received: 22 December 2017
Accepted: 22 February 2018
Published online: 5 March 2018

Abstract

In a simplified model including an SU(2) singlet T quark with charge 2/3, we investigate the single vector-like T production at the high energy $e\gamma$ collision. We study the observability of the vector-like T focusing on the $T\rightarrow Wb$ decay channel with $W\rightarrow l\bar{\nu }$ at $\sqrt{s}=2.0$ TeV. In this analysis, only two free parameters are involved, namely the T quark coupling strength for single production $g^{*}$ and the mass $m_{T}$ . We scan the parameter space and find that the correlation region of $g^{*}\in [0.24, 0.5]$ and $m_{T}\in [800, 1360]$ GeV can be excluded with integrated luminosity $L=100\,\hbox {fb}^{-1}$ and the correlation region of $g^{*}\in [0.13, 0.5]$ and $m_{T}\in [800, 1620]$ GeV can be excluded with integrated luminosity $L=1000 \,\hbox {fb}^{-1}$ at $2\sigma$ level.