A new limit of T-violating transverse muon polarization in the $K^{+}\toπ^{0}μ^{+} ν$ decay

Details A new limit of T-violating transverse muon polarization in the $K^{+}\toπ^{0}μ^{+} ν$ decay A new limit of T-violating transverse muon polarization in the $K^{+}\toπ^{0}μ^{+} ν$ decay

2004-08-12

arxiv.org/abs/hep-ex/0408042v1

Phys.Rev.Lett.93:131601,2004

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.93.131601

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. A new improved value, $P_T= -0.0017\pm 0.0023 (stat)\pm 0.0011 (syst)$, was obtained giving an upper limit, $| P_T | < 0.0050$. The T-violation parameter was determined to be Im$\xi = -0.0053 \pm 0.0071(stat)\pm 0.0036(syst)$ giving an upper limit, $|$Im$\xi| <0.016$.

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