First measurement of the T-violating muon polarization in the decay K^+ --> mu^+ nu gamma

V. V. Anisimovsky, A. N. Khotjantsev, A. P. Ivashkin

We present the result of the first measurement of the T-violating muon polarization P_T in the decay K^+ --> mu^+ nu gamma. This polarization is sensitive to new sources of CP-viol…