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

We investigate the sensitivity of future linear collider experiments to CP violating WWγ couplings in the process e+e−→νν̄γ. 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 |κ̃γ|<0.18, |λ̃γ|<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 sensitivity of order 2 for both couplings is found.