Caliskan, A.

The production potential of the excited neutrinos at the FCC-based electron-hadron colliders, namely, the ERL60⊗FCC with √s = 3.46 TeV, the ILC⊗FCC with √s = 10 TeV, and the PWFA-LC⊗FCC with √s = 31.6 TeV, has been analyzed. The branching ratios of the excited neutrinos have been calculated for the different decay channels and shown that the dominant channel is ∗→eW+. We have calculated the production cross sections with the process of ep→∗q→eW+q and the decay widths of the excited neutrinos with the process of ∗→eW+. The signals and corresponding backgrounds are studied in detail to obtain accessible mass limits. It is shown that the discovery limits obtained on the mass of the excited neutrino are 2452 GeV for Lint=100 fb-1, 5635 GeV for Lint=10 fb-1 (6460 GeV for Lint=100 fb-1), and 10200 GeV for Lint=1 fb-1 (13960 GeV for Lint=10 fb-1), for the center-of-mass energies of 3.46, 10, and 31.6 TeV, respectively.

Caliskan, A.; Kara, S.O.; Ozansoy, A.

We study the excited muon production at the FCC-based muon-hadron colliders. We give the excited muon decay widths and production cross-sections. We deal with the μp→μ∗q→μγq process and plot the transverse momentum and normalized pseudorapidity distributions of final state particles to define the kinematical cuts best suited for discovery. By using these cuts, we get the mass limits for excited muons. It is shown that the discovery limits obtained on the mass of μ∗ are 2.2, 5.8, and 7.5 TeV for muon energies of 63, 750, and 1500 GeV, respectively.