Detecting an Intermediate Mass Charged Higgs at $\gamma \gamma$ Colliders

Abstract

The detection of an intermediate mass charged Higgs boson at $\text{gamgam}$ colliders via the modes $\text{gamgam}\to H^{+}{H}^{-}\to \nu {\tau }^{+}\bar{\nu }{\tau }^{-},c\bar{s}\bar{c}s,$ and $\nu {\tau }^{+}\bar{c}s+c\bar{s}\bar{\nu }{\tau }^{-}$ is considered. $W^{+}{W}^{-}$ boson pair production is the dominant background for these modes. The three modes may be used in a complementary fashion to detect a charged Higgs boson. The mixed leptonic-hadronic mode may be used to determine the charged Higgs mass by reconstructing the invariant hadronic mass. The sensitivity of Br$(H^{+}\to c\bar{s},\nu {\tau }^{+})$ on the discovery limit of the charged Higgs boson is also discussed.

Comments: Latex file, 13 pages, 8 figures (available by anonymous ftp at utaphy/UTTG-preprints in the files phohiggs1.ps and phohiggs2.ps), preprint NUHEP-TH-93-7, CPP-93-6, UTTG-8-93 (minor typos corrected)