Properties of Higgs bosons in gauge models with right-handed charged currents

Abstract

An SU(2) × U(1) gauge model of the weak and electromagnetic interactions with right-handed as well as left-handed charged currents must have, in general, four Higgs bosons: $Q^{\pm }$, $H$, and $G$. Not only are they in principle directly observable, their effects can also be indirectly felt in many ways just as with the intermediate vector bosons. In particular, they can contribute significantly to the weak nonleptonic decays of hadrons and might help to account for the $\Delta I=\frac{1}{2}$ rule. We illustrate these ideas by considering in some detail a specific model which is consistent with the present data on neutral currents and inclusive neutrino and antineutrino data, and discuss both the production and the decay of these Higgs bosons. Based on the most recent $e^{+}{e}^{-}$ data, we find that they must be heavier than about 1.7 GeV. Whereas the neutral Higgs bosons $H$ and $G$ are not easily produced, the charged ones $Q^{\pm }$ are expected to be found, say, in $e^{+}{e}^{-}$ collisions. We discuss ways of ascertaining this.