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<i>T</i>-odd correlation in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mi>l</mml:mi><mml:mn>3</mml:mn><mml:mn /><mml:mi>γ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>decay
The dependence of the $K^+ \to \pi^0 l^+ \nu_l \gamma$ decay width on the $T$-odd kinematical variable, $ \xi = {\vec q \cdot [\vec p_l \times \vec p_\pi]} / {M^3}$, is studied at the tree and one-loop levels of Standard Model. It is shown that at the tree level this …