Comparison of gauge-model predictions at high Q2: pp, p-barp, and e+e- interactions

We compare the predictions of the SU/sub L/(2) x U(1) and SU/sub L/(2) x SU/sub R/(2) x U(1) gauge models for various pp, p-barp, and e+e- processes at high Q2. First, we calculate the masses, total widths, and branching ratios for the various neutral (Z0) gauge bosons in both models to show their parameter dependence. We then calculate their production cross sections for pp, p-barp, and e+e- interactions. Further, we consider the forward-backward asymmetry and the polarization effects in e+e- annihilation for both models. We find that the best and perhaps the only way to distinguish the two models is to search for a second Z0 boson in leptonic and hadronic reactions. The detection of such a particle may be possible with the next generation of accelerators