Improving the discovery potential of charged Higgs bosons at Tevatron Run 2

Abstract

By exploiting the full process $p\bar{p}\to t\bar{b}{H}^{-}$, in place of the standard Monte Carlo procedure of factorising production and decay, $p\bar{p}\to t\bar{t}$ followed by $\bar{t}\to \bar{b}{H}^{-}$, we show how to improve the discovery reach of the Tevatron (Run 2) in charged Higgs boson searches, in the large $\tan \beta$ region. This is achieved in conjunction with dedicated cuts on a `transverse mass' distribution sensitive to the Higgs boson mass and to `polarisation' effects in the $H^{-}\to {\tau }^{-}{\bar{\nu }}_{\tau }$ decay channel.

Comments: 12 pages, LaTeX, 5 figures (one figure added, discussion slightly changed: version to appear in JHEP)