Lepton flavor physics at μ+μ+ colliders

A bstract We discuss sensitivities to lepton flavor violating (and conserving) interactions at future muon colliders, especially μ + colliders. Compared with the searches for rare decays of and τ , we find that TeV-scale colliders have better depending on pattern hierarchy in mixings. As an example, study case type-II seesaw model, where mixing parameters direct relation neutrino mass matrix. At a collider, number events → process can be larger than $$ \mathcal{O}(100) O 100 center energy \sqrt{s} s = 2 TeV, integrated luminosity \mathcal{L} L 1 ab − while satisfying bounds from . impacts overall scale neutrinos as well CP phases expected events.