Speaker
Description
The $\omega-\phi$ mixing plays an important role in particle interactions involving vector mesons. The SU(3) flavor symmetry predicts the flavor mixing in vector meson nonet. The $\omega-\phi$ mixing angle was predicted by several physical processes, such as decay rate, radiative decay of $\omega$ and $\phi$. In this work, we calculated vector meson masses by using chiral Lagrangian at leading order (LO) and fitted them to the physical vector meson masses. We adjusted two low energy parameters, $m_V$ and $b_D$, at the ideal mixing angle. We found that the value of the low energy parameters can recover the $\rho-\omega$ mixing, which is the well-known property of vector meson at LO. Furthermore, when we treated the mixing angle as a free parameter, together with the $m_V$ and $b_D$, and refitted to the physical masses, we obtained the mixing angle differ from the ideal mixing angle by 2 degrees, and the vector meson masses slightly differ from their physical values.
