Improved sensitivity on the electromagnetic dipole moments of the top quark in γγ, γγ*, and γ*γ* collisions at the CLIC

摘要

We realize a phenomenological study to examine the sensitivity on the magnetic moment and electric dipole moment of the top quark through the processes γγ →t t, eγ → eγ*γ γ→ ett, and e~-e~ +→ e~- γ*γ*e~+ → e~-tte~+ at the Compact Linear Collider (CLIC). We find that with a center-of-mass energy of the CLIC-1.4 TeV, integrated luminosity of L = 1500 fb~(-1) and CLIC-3 TeV, integrated luminosity of L = 2000 fb~(-1) with systematic uncertainties of δ_(sys) = 0, 5%, 10% at the 95% C.L., it is possible the CLIC may put limits on the electromagnetic dipole moments of the top quark a_V and a_A with a sensitivity of O(10~(-3) - 10~(-2)). Therefore, we show that the sensitivity with the CLIC data is much greater than that for the Large Hadron Collider data.