Production of ${\pi }^0$ and $\eta$ mesons in U$+$U collisions at $\sqrt{s_{{}_{NN}}}=192$ GeV

Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider measured ${\pi }^0$ and $\eta$ mesons at midrapidity in U$+$U collisions at $\sqrt{s_{{}_{NN}}}=192$ GeV in a wide transverse momentum range. Measurements were performed in the ${\pi }^0(\eta )\to \gamma \gamma$ decay modes. A strong suppression of ${\pi }^0$ and $\eta$ meson production at high transverse momentum was observed in central U$+$U collisions relative to binary scaled $p$$+$$p$ results. Yields of ${\pi }^0$ and $\eta$ mesons measured in U$+$U collisions show similar suppression pattern to the ones measured in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV for similar numbers of participant nucleons. The $\eta$/${\pi }^0$ 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.

arXiv comment403 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.html

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Cited by in corpus (4)

• Pion, kaon, and (anti-)proton production in U+U Collisions at $\sqrt{s_{NN}}$ = 193 GeV measured with the STAR detector
• Measurement of $\varphi$-meson production in Cu$+$Au at $\sqrt{s_{{}_{NN}}}=200$ GeV and U$+$U at $\sqrt{s_{{}_{NN}}}=193$ GeV
• Identified charged-hadron production in $p$$+$Al, ${}^3$He$+$Au, and Cu$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV and in U$+$U collisions at $\sqrt{s_{{}_{NN}}}=193$ GeV
• Nuclear modification factors of strange mesons measured by PHENIX