Vector Meson Exchanges and CP Asymmetry in K^{pm}rightarrowπ^{pm}π⁰

Riazuddin , N. Paver , F. Simeoni

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classification ✦ hep-ph

keywords rightarrowasymmetryexchangesmesonvectoralgebraamplitudecontribution

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Using a current algebra framework, we discuss the contribution of vector meson exchanges to the CP violating asymmetry in the decay $K^{\pm}\rightarrow\pi^{\pm}\pi^0$, resulting from the interference of the $K\rightarrow\pi\pi$ amplitude with the radiative correction $K\rightarrow\pi\pi\gamma$.

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CP asymmetries in charged meson decay to two pions
hep-ph 2026-05 unverdicted novelty 4.0

CP asymmetries for B+ to pi+ pi0, D+ to pi+ pi0, and K+ to pi+ pi0 are estimated in the Standard Model at roughly 3 times 10 to the -3, 10 to the -5, and 10 to the -6 using a unified formalism for isospin violation.