介子

It turns out that the weak interaction causes a kaon gradually to convert into its antiparticle, the antikaon, and then back again.

弱交互作用会使k介子逐渐变成反粒子──反k介子，然后又变回来。

In the framework of quarkonia-quarkonia mixing, considering the effect of the flavor-dependent transitions between quarkonia, the new mass relation of a meson nonet is presented.

摘要在介子-介子混合框架下，夸克偶素湮灭跟味道有关这种应，给出了一种新介子九重态成员量关系。

It indicates that a correct mass relation of a meson nonet (especially for the non ideal-mixing meson nonet) should incorporate the effect of the flavor-dependent quarkonia annihilation.

这表明，一个正确反映介子九重态（特别是非理想混合介子九重态）成员量关系公式，应该包含夸克偶素湮灭跟味道有关这种修正。