HERA prospects on Compositeness and New Vector Bosons

Abstract

The absence of deviations from the Standard Model for the differential cross section $d\sigma /d{Q}^2$ at HERA is used to set limits on electron quark compositeness scale and on new vector bosons, especially the hadrophilic one recently introduced as a possible explanation for LEP/SLC and CDF anomalies.

Comments: Latex file, 7 pages and 1 ps fig, few comments on others experiments are added, results are unchanged. To appear in Phys. Let. B