Speaker
Description
In a quark-gluon plasma, the enormous total angular momentum generated by non-central collisions evolves over time through spin-orbit coupling interactions, eventually converting into the spin component and thereby inducing spin polarization of the particles.
Our work studies the contribution of the shear flow generated by non-equilibrium medium to the spin alignment of the vector meson J/ψ at rest in fluid element. The vector meson J/ψ is composed of a charm quark and an anti-charm quark. By correcting the potential of the J/ψ with the gluon propagator containing the shear tensor in the hard thermal loop approximation, we find that the shear flow affects the wave function of the J/ψ, thereby generating spin alignment. Meanwhile, we obtain the value of $\rho_{00}$ by studying the decay process of the J/ψ into a lepton-antilepton pair.
| 请选择分会 | 高能重离子物理 |
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