Effects of gauge boson compositeness in$e\bar v_e \to W^ - Z^0$

Abstract

Here, we treat the high-energy production process$e\bar v_e \to W^ - Z^0$, allowing for gauge boson compositeness, using two approaches: (a) through an anomalousW boson weak magnetic moment parameterk _z , and (b) through a modification of theW propagator andWWZ vertex by a form factor depending on a compositeness scale parameter Λ. We give the angular differential and total cross-section for different values ofk _z (approach (a)), and different values of Λ (approach (b)). A clear deviation from the standard model result is observed in both cases.