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arXiv · 1906.11575

Exclusive Production Ratio of Neutral over Charged Kaon Pair in $e^+e^-$ Annihilation Continuum via `Straton Model'

Yi Jin·Shi-Yuan Li·Yan-Rui Liu·Zhao-Xia Meng·Zong-Guo Si·Tao Yao
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Abstract

A completely relativistic quark model in the Bethe-Salpter framework is employed to calculate the exclusive production ratio of the neutral over charged Kaon pair in $e^+e^-$ annihilation continuum region for center of mass energies smaller than the $J/Ψ$ mass. The valence quark charge plays the key rôle. The cancellation of the diagrams for the same charge case (in $K_S + K_L$) and the non-cancellation of the diagrams for the different charge case (in $K^-+K^+$) lead to the ratio as $(m_s-m_d)^2/M_{Kaon}^2 \sim 1/10$.

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Yi Jin, Shi-Yuan Li, Yan-Rui Liu, Zhao-Xia Meng, Zong-Guo Si, Tao Yao. 2019-07-09. Exclusive Production Ratio of Neutral over Charged Kaon Pair in $e^+e^-$ Annihilation Continuum via `Straton Model'. https://doi.org/10.1103/physrevc.102.015201

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