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

A. N. Khotjantsev; A. P. Ivashkin; et al. (KEK-PS E246 Collaboration); V. V. Anisimovsky

arxiv: hep-ex/0304027 · v1 · submitted 2003-04-22 · ✦ hep-ex

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

V. V. Anisimovsky , A. N. Khotjantsev , A. P. Ivashkin , et al. (KEK-PS E246 Collaboration) This is my paper

classification ✦ hep-ex

keywords decaypolarizationfirstgammameasurementmuont-violatingaccumulated

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

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