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

V. V. Anisimovsky·A. N. Khotjantsev·A. P. Ivashkin
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Abstract

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-violation in the Higgs sector. Using data accumulated in the period 1996-98 we have obtained P_T = (-0.64 +- 1.85(stat) +- 0.10(syst))x10^{-2} which is consistent with no T-violation in this decay.

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V. V. Anisimovsky, A. N. Khotjantsev, A. P. Ivashkin. 2003-04-22. First measurement of the T-violating muon polarization in the decay K^+ --> mu^+ nu gamma. https://doi.org/10.1016/s0370-2693(03)00576-8

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