Projections for model-independent limit estimates on top-quark anomalous electromagnetic couplings at the FCC-he

Abstract

The measurement of the top-quark anomalous electromagnetic couplings is one of the most important goals of the top-quark physics program in present and future collider experiments and would provide direct information on the non-standard interactions of the top-quark. We study a top-quark pair production scenario at the Future Circular Collider Hadron-Electron (FCC-he) through e − p → e − γ * γ * p → e − ttp collisions, which will provide information on the sensitivities of anomalousâ V andâ A couplings at 95% C.L., as well as create the possibility of probing new physics. Energy of the e − beams is taken to be E e = 250 GeV and 500 GeV , and the energy of the p beams is considered to be E p = 50 T eV . With these energies the FCC-he can measure the dipole moments of the top-quarkâ V andâ A with a sensitivity of the order O(10 −2 −10 −1 ).

Study on the anomalous quartic $$W^+W^-\gamma \gamma $$ couplings of electroweak bosons in $$e^-p$$ collisions at the LHeC and the FCC-he

“…A review of the studies made on eγ * , γ p, γ * p and γ * γ * collisions physics on future colliders is made in Refs. [57][58][59][73][74][75][76][77][78][79][80][81][82][83][84][85][86].…”

Study on the anomalous quartic $W^+W^-γγ$ couplings of electroweak bosons in $e^-p$ collisions at the LHeC and the FCC-he

“…A review of the studies made on eγ * , γ * p and γ * γ * collisions physics on future colliders it is made in Refs. [54][55][56][69][70][71][72][73][74][75][76][77][78][79][80][81][82].…”