| Issue |
EPJ Web Conf.
Volume 339, 2025
12th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2024)
|
|
|---|---|---|
| Article Number | 04009 | |
| Number of page(s) | 7 | |
| Section | Contributed Talk: Heavy Quarks and Quarkonia | |
| DOI | https://doi.org/10.1051/epjconf/202533904009 | |
| Published online | 05 November 2025 | |
https://doi.org/10.1051/epjconf/202533904009
Measurement of J/ψ production as a function of event activity in p+p collisions at √s = 510 GeV with STAR at RHIC
Lehigh University, Bethlehem, Pennsylvania 18015
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 5 November 2025
Abstract
We present measurements of J/ψ production in the dielectron channel at mid rapidity (|y| <1) over the transverse momentum range 4 < pT < 12 GeV/c examined as a function of the charged-particle multiplicity within |η| < 1. Our measurements reveal a faster-than-linear increase in J/ψ production with respect to charged-particle multiplicity, extending previously reported trends at 200 GeV. The divergence of the trends for RHIC and LHC at higher multiplicity may constrain theoretical models incorporating multi-parton interactions and color-string percolation.
© The Authors, published by EDP Sciences, 2025
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.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.