Workshop on Quantum Entanglement at the Energy Frontier

Dihadron spin correlations in unpolarized high energy collisions

26 Apr 2025, 13:45

25m

W202 (School of Physics, Peking University)

Afternoon 1

Speaker

Prof. Shu-yi Wei (Shandong University)

Description

The emergence of spin correlations through quantum entanglement in unpolarized high-energy collisions offers a unique opportunity to investigate spin-dependent fragmentation functions, even with unpolarized experiments. In a series of studies [1-5], we investigated the longitudinal and transverse spin correlations of back-to-back dihadrons produced in unpolarized $e^+e^-$, $pp$ and $ep$ collisions. We demonstrate the phenomenological application of quantum entanglements.

References
[1] Probing the longitudinal spin transfer via dihadron polarization correlations in unpolarized $e^+e^-$ and $pp$ collisions; H.C. Zhang, S.Y. Wei; Phys.Lett.B839, 137821 (2023).
[2] Correlations of dihadron polarization in central, peripheral and ultraperipheral heavy-ion collisions; X. Li, Z.X. Chen, S. Cao, S.Y. Wei; Phys.Rev.D 109, 014035 (2024).
[3] Dihadron helicity correlation in photon-nucleus collisions; Z.X. Chen, H. Dong, S.Y. Wei; Phys.Rev.D 110, 056040 (2024).
[4] Transverse spin correlation of back-to-back dihadron in unpolarized collisions; L. Yang, Y.K. Song, S.Y. Wei; arXiv:2410.20917.
[5] Helicity correlation of neighboring dihadron; F. Huang, T. Liu, Y.K. Song, S.Y. Wei; arXiv:2412.00394.