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 the ones 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.Comment: 403 authors from 72 institutions, 13 pages, 6 figures, 7 tables, 2012
data. v2 is version accepted by Physical Review C. Plain text data tables for
the points plotted in figures for this and previous PHENIX publications are
(or will be) publicly available at http://www.phenix.bnl.gov/papers.htm