Search for the singlet vector-like top quark in the T→tZ channel with Z→■ at hadron colliders

作者：韩琳; 王世钰; 尚亮亮; 杨炳方

来源：Chinese Physics C, 2023, 47(04): 107-115.

Based on a simplified model including a singlet vector-like top quark T with charge |Q|=2/3,we analyze the prospects of observing T via the single T production in the tZ channel with Z decaying to neutrinos at the hadronhadron colliders.This simplified model only includes two free parameters,the coupling constant g* and the T quark mass mT.To investigate the observability of the single T production,we perform a detailed background analysis and detector simulation for the collision energies 14 TeV,27 TeV,and 100 TeV.We scan the g*-mT parameter space and show the exclusion and discovery capabilities on the T quark with the highest integrated luminosity designed at these colliders.Moreover,the limits from the narrow-width approximation and electro weak precision observables are considered.