Model-independent bounds on kinetic mixing

Abstract

New Abelian vector bosons can kinetically mix with the hypercharge gauge boson of the Standard Model. This letter computes the model-independent limits on vector bosons with masses from 1GeV to 1TeV. The limits arise from the numerous e+e- experiments that have been performed in this energy range and bound the kinetic mixing by ε ≤ 0.03 for most of the mass range studied, regardless of any additional interactions that the new vector boson may have. Copyright © 2011 Anson Hook et al.