Production of π0 and η mesons in Cu+Au collisions at √sNN = 200 GeV
PHENIX Collaboration. (2018). Production of π0 and η mesons in Cu+Au collisions at √sNN = 200 GeV. Physical Review C, 98 (5), 054903. doi:10.1103/PhysRevC.98.054903
Published inPhysical Review C
© The Authors, 2018.
Production of π0 and η mesons has been measured at midrapidity in Cu+Au collisions at √sNN = 200 GeV. Measurements were performed in π0 (η) → γ γ decay channel in the 1(2)-20 GeV/c transverse momentum range. A strong suppression is observed for π0 and η meson production at high transverse momentum in central Cu+Au collisions relative to the p + p results scaled by the number of nucleon-nucleon collisions. In central collisions the suppression is similar to Au + Au with comparable nuclear overlap. The η/π0 ratio measured as a function of transverse momentum is consistent with mT -scaling parametrization down to pT = 2 GeV/c, its asymptotic value is constant and consistent with Au + Au and p + p and does not show any significant dependence on collision centrality. Similar results were obtained in hadron-hadron, hadron-nucleus, and nucleusnucleus collisions as well as in e+e− collisions in a range of collision energies √sNN = 3−1800 GeV. This suggests that the quark-gluon-plasma medium produced in Cu+Cu collisions either does not affect the jet fragmentation into light mesons or it affects the π0 and η the same way. ...
PublisherAmerican Physical Society
MetadataShow full item record
Showing items with similar title or keywords.
Diffusion processes involving multiple conserved charges : a study from kinetic theory and implications to the fluid-dynamical modeling of heavy ion collisions Fotakis, Jan A.; Greif, Moritz; Greiner, Carsten; Denicol, Gabriel S.; Niemi, Harri (American Physical Society, 2020)The bulk nuclear matter produced in heavy ion collisions carries a multitude of conserved quantum numbers: electric charge, baryon number, and strangeness. Therefore, the diffusion processes associated with these conserved ...
Nucleon dissociation and incoherent J/ψ photoproduction on nuclei in ion ultraperipheral collisions at the CERN Large Hadron Collider Guzey, Vadim; Strikman, M.; Zhalov, M. (American Physical Society, 2019)Using the general notion of cross section fluctuations in hadron-nucleus scattering at high energies, we derive an expression for the cross section of incoherent J / ψ photoproduction on heavy nuclei d σ γ A ...
Predictions for multiplicities and flow harmonics in 5.44 TeV Xe+Xe collisions at the CERN Large Hadron Collider Eskola, Kari; Niemi, Harri; Paatelainen, R.; Tuominen, K. (American Physical Society, 2018)We present the event-by-event next-to-leading-order perturbative-QCD + saturation + viscous hydrodynamics (EKRT) model predictions for the centrality dependence of the charged hadron multiplicity in the pseudorapidity ...
ALICE Collaboration (Elsevier B.V., 2018)The first measurements of anisotropic flow coefficients for vn mid-rapidity charged particles in Xe–Xe collisions at √sNN=5.44 TeV are presented. Comparing these measurements to those from Pb–Pb collisions at √sNN=5.02 ...
PHENIX Collaboration (American Physical Society, 2018)We measured direct photons for pT < 5 GeV/c in minimum bias and 0%–40% most-central events at midrapidity for Cu+Cu collisions at √sNN = 200 GeV. The e+e− contribution from quasireal direct virtual photons has been ...