A simulated search for the singlet vector-like bottom quark decaying into tW at high energy pp colliders

Abstract

Abstract In a framework of simplified model, we perform a simulated search for the singlet vector-like bottom quark B decaying into tW with t hadronic decay and W leptonic decay at the 14 TeV high-luminosity LHC (HL-LHC), 27 TeV high energy LHC (HE-LHC) and 100 TeV Future Circular Hadron Collider (FCC-hh). In this work, we focus on the case that the B only couples with the third generation quarks of the Standard Model. We make a detailed detector simulations of the signal and backgrounds and obtain the $$2\sigma $$ 2 σ exclusion limit and $$5\sigma $$ 5 σ discovery prospects. Our results show that the upcoming HL-LHC can exclude (discover) the $$m_B$$ m B to 2100 (1900) GeV for a typical coupling strength $$g^{*}=0.2$$ g ∗ = 0.2 . For the HE-LHC (FCC-hh), this exclusion capability on the B quark mass can be expanded to more than 3000 (5000) GeV.