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

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.

11 pages, 8 figures

References in corpus (8)

• Radiative Semileptonic Kaon Decays
• Measurement of Structure Dependent K^+ -> mu^+ nu gamma
• Time reversal violation in $K^{+}\to {\mu }^{+}\nu \gamma$ decay and three Higgs model
• T Violating Muon Polarization in $K^{+}\to {\mu }^{+}\nu \gamma$
• T-Violation in $K^{+}\to {\mu }^{+}\nu \gamma$ Decay And Supersymmetry
• Muon transverse polarization in the $K_{l2\gamma }$ decay in SM
• A Possibility to Measure CP-Violating Effects in the Decay K --> mu nu gamma
• Search for T-violation in K^+ --> pi^0 mu^+ nu and K^+ --> mu^+ nu gamma Decays

Cited by in corpus (6)

• Beta Decays and Non-Standard Interactions in the LHC Era
• Experiments with K-Meson Decays
• Axial-vector Form Factors for $K_{\ell 2\gamma }$ and ${\pi }_{\ell 2\gamma }$ at $O(p^6)$ in Chiral Perturbation Theory
• T-odd correlations in radiative K_l3^+ decays and chiral perturbation theory
• Measurement of T-odd asymmetry in radiative K+ -> pi0 e+ nu gamma decay using OKA detector
• New search for T-violation in the decays of the charged kaon