Pair production of exotic vektor like Y quark at the FCC-hh

In this thesis, we investigate pair production of Vector Like Quark (VLQ) Y at FCC-hh (Future Circular Collider hadron-hadron) with √s=100 TeV and L_int=3 ab^(-1), L_int=30 ab^(-1) integrated luminosities. In this study, pp→YY ̅→WbWb ̅→lbqq ̅'b ̅ signal and relevant background events have been generated by including the VLQ_V4_4FNS_UFO model into the MadGraph5_aMC@NLO program. Signal generation has been performed model-independent via strong interaction. Pythia8 program is used for decay and hadronization of particles, Delphes package is used for fast detector simulation. The obtained Monte Carlo (MC) data were analyzed with the help of ROOT macros. The search has focused on events with a single isolated lepton (electron or muon), missing transverse momentum, and at least four jets (2 of them tagged b) with large transverse momenta. Statistical significance (SS) calculations are based on reconstruction of the VLQ Y invariant mass. According to the study results, the Y_Had mass limit for the significance 3σ level is ~1850 GeV and ~2550 GeV for L_int=3 ab^(-1) and L_int=30 ab^(-1), respectively; For the significance 5σ level, they are ~1550 GeV and ~2230 GeV, respectively. However, the Y_Lep mass limit for the significance 3σ level is ~2300 GeV and ~2650 GeV for L_int=3 ab^(-1) and L_int=30 ab^(-1), respectively; For the significance 5σ level, they are ~2050 GeV and ~2550 GeV, respectively. These mass limits are greater than current experimental mass limits. Besides, the Y_Lep mass has larger limits than the Y_Had mass. With its high center-of-mass energy and integrated luminosity, FCC-hh has great potential to generate vector like quarks.