Production of $\omega$ mesons in $p+p$, d+Au, Cu+Cu, and Au+Au collisions at $\sqrt{s_NN}=200$ GeV

The PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) has measured omega meson production via leptonic and hadronic decay channels in p+p, d+Au, Cu+Cu, and Au+Au collisions at sqrt(s_NN) = 200 GeV. The invariant transverse momentum spectra measured in different decay modes give consistent results. Measurements in the hadronic decay channel in Cu+Cu and Au+Au collisions show that omega production has a suppression pattern at high transverse momentum, similar to that of pi^0 and eta in central collisions, but no suppression is observed in peripheral collisions. The nuclear modification factors, R_AA, are consistent in Cu+Cu and Au+Au collisions at similar numbers of participant nucleons.

Note:

542 authors, pages, 11 figures, 3 tables. Submitted to Phys. Rev. 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

25.40.Ve
25.75.Dw
omega(783): hadroproduction
transverse momentum: momentum spectrum
transverse momentum: high
omega(783): hadronic decay
PHENIX
omega(783): leptonic decay
omega(783): radiative decay
nuclear matter: effect

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Production of ω\omegaω mesons in p+pp+pp+p, d+Au, Cu+Cu, and Au+Au collisions at sNN=200\sqrt{s_NN}=200sN​N​=200 GeV

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Production of $\omega$ mesons in $p+p$ , d+Au, Cu+Cu, and Au+Au collisions at $\sqrt{s_NN}=200$ GeV