Speaker
Description
The spin correlations of $\Lambda$ hyperons offer a direct window into QCD spin dynamic, including spin-orbit coupling, polarization transfer during hadronization, and possible local spin entanglement in the fragmentation process. With the high-statistics data collected by the CMS experiment, we present the first spin correlation results for $\Lambda\Lambda$, $\Lambda\bar{\Lambda}$ and $\bar{\Lambda}\bar{\Lambda}$ in pp collisions $\sqrt{s}= 13$ TeV and pPb collisions at $\sqrt{s_{NN}}= 8.16$ TeV as functions of spatial distance ($\Delta R = \sqrt{\Delta \eta^{2} + \Delta \phi^{2}}$) between the hyperon pairs. These high‑precision measurements provide new constraints on microscopic models of spin generation and hadronization, enabling discrimination between fragmentation and recombination mechanisms and opening a novel experimental avenue for QCD spin studies.
| I read the instructions above | Yes |
|---|