Speaker
Mr
文博 董
(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.
| 请选择分会 | 高能重离子物理 |
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Primary author
Mr
文博 董
(University of Science and Technology of China)
