https://doi.org/10.1051/epjconf/202429617002
Entanglement-enabled spin interference in exclusive J/ψ photoproduction through ultra-peripheral collisions at STAR
Department of Physics, Kent State University, Kent, OH 44242, USA
* e-mail: ashikhep@gmail.com/asheikh2@kent.edu
Published online: 26 June 2024
In ultra-peripheral collisions (UPC), exclusive vector meson photoproduction, such as ρ0 and J/ψ, serves as a sensitive probe for studying the gluon structure in heavy nuclei. The linear polarization of the photons involved in these processes help to image the nucleus through the so-called entanglement-enabled spin interference in vector meson photoproductions. The photoproduced J/ψ has longer lifetime (2160 fm/c) and non-localized wave function which provides unique opportunity to study the entanglement between the photon and the Pomeron phases emitted from each nucleus. We present the first measurement of the interference pattern for the photoproduced J/ψ in Au+Au UPC at √sNN = 200 with the STAR experiment.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
