Disentangling longitudinal and transverse modes of the $\varphi$ meson through dilepton and kaon decays

In Woo Park, Hiroyuki Sako, Kazuya Aoki +2

Angular distributions of $\varphi$ meson decay amplitudes of $e^{+}{e}^{-}$ and $K^{+}{K}^{-}$ channels are computed using both specific interaction Lagrangians and simple arguments relying on angul…