Charged and pseudoscalar Higgs boson production at a muon collider

Abstract

We consider single charged Higgs ${(H}^{\ifmmode\pm\else\textpm\fi{}})$ and pseudoscalar Higgs ${(A}^{0})$ boson production in association with a gauge boson at ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ colliders. We find that the tree-level t-channel and s-channel contributions to ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}{H}^{\ifmmode\pm\else\textpm\fi{}}{W}^{\ensuremath{\mp}}{,A}^{0}Z$ are enhanced for large values of $\mathrm{tan}\ensuremath{\beta},$ allowing sizable cross sections whose analogies at ${e}^{+}{e}^{\ensuremath{-}}$ colliders would be very small. These processes provide attractive new ways of producing such particles at ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ colliders and are superior to the conventional methods in regions of parameter space.