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A search for T-violating transverse muon polarization ($P_T$) in the$K^{+}\to \pi^{0}\mu^{+}\nu$ decay was performed using kaon decays at rest. Anew improved value, $P_T= -0.0017\pm 0.0023 (stat)\pm 0.0011 (syst)$, wasobtained giving an upper limit, $| P_T | < 0.0050$. The T-violation parameterwas determined to be Im$\xi = -0.0053 \pm 0.0071(stat)\pm 0.0036(syst)$ givingan upper limit, $|$Im$\xi| <0.016$.Comment: 5 pages, 4 figure

physical review letters

New Limit on the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>T</mml:mi></mml:math>-Violating Transverse Muon Polarization in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>π</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:msup><mml:mi>μ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mi>ν</mml:mi></mml:math>Decays

New Limit on theT-Violating Transverse Muon Polarization inK+→π0μ+νDecays