CP-violating anomalous WWγ couplings in e⁺e^- collisions

Abstract

We investigate the sensitivity of future linear collider experiments to CP violating WWγ couplings in the process e⁺e^-→νν̅γ. We consider several sets of machine parameters: centre of mass energies √s=350, 500 and 800 GeV and operating at different luminosities. From an analysis of the differential cross-section the following 95% C.L. limits |κ^~_γ|<0.18, |λ^~_γ |<0.069 are estimated to be obtained at a future 500 GeV LC with an integrated luminosity of 125 fb^-1, a great improvement as compared to the LEP2 reach, where a senstitivity of order 2 for both couplings is found.