Speaker
Mr
Wen-Bo Dong
(University of Science and Technology of China)
Description
We propose that the anisotropic particle distributions in heavy ion collisions can induce a non-vanishing spin alignment of vector meson. We investigate this effect in the production processes of $\phi$ and $K^{*0}$ mesons. For both $\phi$ and $K^{*0}$ produced via S wave scattering, a negative $\delta\rho_{00}$ of order $10^{-3}$ is observed, whose absolute value increases in a more anisotropic system. In contrast, $\phi$ and $K^{*0}$ produced through the vertex with spin-orbit coupling have a positive $\delta\rho_{00}$, which also increases with increasing anisotropic parameter. The sign difference between two cases provides a possible way to test the hadronization mechanism for the vector meson.
Primary authors
Dirk Rischke
(Goethe University Frankfurt am Main)
Prof.
Qun Wang
(University of Science and Technology of China)
Mr
Wen-Bo Dong
(University of Science and Technology of China)
Xin-Li Sheng
(Firenze University and INFN Firenze)
轶亮 尹
(中国科学技术大学)
