Production of π.sup.0./sup. and η mesons in U+U collisions at √s.sub.NN./sub. = 192 GeV

0539205 - FZÚ 2021 RIV US eng J - Journal Article
Acharya, U. - Aidala, C. - Ajitanand, N.N. - Vrba, Václav - Tomášek, Michal … Total 401 authors
Production of π⁰ and η mesons in U+U collisions at √s_NN = 192 GeV.
Physical Review C. Roč. 102, č. 6 (2020), s. 1-13, č. článku 064905. ISSN 2469-9985. E-ISSN 2469-9993
R&D Projects: GA MŠMT(CZ) LTT17018
Research Infrastructure: CERN-CZ II - 90104
Institutional support: RVO:68378271
Keywords : relativistic nuclear collisions * meson: production * transverse momentum
OECD category: Particles and field physics
Impact factor: 3.296, year: 2020
Method of publishing: Open access

The PHENIX experiment at the Relativistic Heavy Ion Collider measured π0 and η mesons at midrapidity in U+U collisions at sNN=192 GeV in a wide transverse momentum range. Measurements were performed in the π0(η)→γγ decay modes. A strong suppression of π0 and η meson production at high transverse momentum was observed in central U+U collisions relative to binary scaled p+p results. Yields of π0 and η mesons measured in U+U collisions show similar suppression pattern to those measured in Au+Au collisions at sNN=200 GeV for similar numbers of participant nucleons. The η/π0 ratios do not show dependence on centrality or transverse momentum and are consistent with previously measured values in hadron-hadron, hadron-nucleus, nucleus-nucleus, and e+e− collisions.
Permanent Link: http://hdl.handle.net/11104/0316887