Measurements of the Elliptic and Triangular Azimuthal Anisotropies in Central 3He + Au, d + Au and p + Au Collisions at √sNN p = 200 GeV

Authors

STAR Collaboration

Abstract

The elliptic (v2) and triangular (v3) azimuthal anisotropy coefficients in central He3+Au, d+Au, and p+Au collisions at sNN=200 GeV are measured as a function of transverse momentum (pT) at midrapidity (|η|< 0.9), via the azimuthal angular correlation between two particles both at |η|< 0.9. While the v2(pT) values depend on the colliding systems, the v3(pT) values are system independent within the uncertainties, suggesting an influence on eccentricity from subnucleonic fluctuations in these small-sized systems. These results also provide stringent constraints for the hydrodynamic modeling of these systems.

Document Type

Article

Publication Date

2023

Notes/Citation Information

© 2023 American Physical Society

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevLett.130.242301

Funding Information

We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science, the U.S. National Science Foundation, National Natural Science Foundation of China, Chinese Academy of Science, the Ministry of Science and Technology of China and the Chinese Ministry of Education, the Higher Education Sprout Project by Ministry of Education at NCKU, the National Research Foundation of Korea, Czech Science Foundation and Ministry of Education, Youth and Sports of the Czech Republic, Hungarian National Research, Development and Innovation Office, New National Excellency Programme of the Hungarian Ministry of Human Capacities, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre and WUT ID-UB of Poland, the Ministry of Science, Education and Sports of the Republic of Croatia, German Bundesministerium für Bildung, Wissenschaft, Forschung and Technologie (BMBF), Helmholtz Association, Ministry of Education, Culture, Sports, Science, and Technology (MEXT) and Japan Society for the Promotion of Science (JSPS).

Repository Citation

STAR Collaboration, "Measurements of the Elliptic and Triangular Azimuthal Anisotropies in Central 3He + Au, d + Au and p + Au Collisions at √sNN p = 200 GeV" (2023). Physics and Astronomy Faculty Publications. 717.
https://uknowledge.uky.edu/physastron_facpub/717