Phobos results on charged particle multiplicity and pseudorapidity distributions in
Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra-relativistic energies

Phys. Rev. C 83, 024913 (2011)

 

  • Figure 1 - Phobos detectors used in this measurement

  • Figure 2 - Acceptance of the Phobos detectors

  • Figure 3 - Illustration of centrality determination

  • Figure 4 - energy deposition showing effect of merging

  • Figure 5 - Energy loss versus eta showing effect of corrections for angle 

  • Figure 6 - Location of secondaries and their ratio to primaries

  • Figure 7 - Illustration of tracklet method

  • Figure 8 - Illustration of combinatoric background subtraction

  • Figure 9 - Single event energy deposition

  • Figure 10 - Occupancy versus pseudorapidity

  • Figure11 - Other analysis parameters versus pseudorapidity

  • Figure 12 - Normalized midrapidity dN/deta versus energy for A+A & p+p

  • Figure 13 - Normalized midrapidity dN/deta versus centrality for Au+Au

  • Figure 14 - Same as Fig 13 for Cu+Cu

  • Figure 15 - dN/deta versus eta in centrality bins for Au+Au @ 19.6 GeV

  • Figure 16 - Same as Fig 15 for 62.4 GeV

  • Figure 17 - Same as Fig 15 for 130 GeV

  • Figure 18 - Same as Fig 15 for 200 GeV

  • Figure 19 - dN/deta versus eta in centrality bins for Cu+Cu @ 22.4 GeV

  • Figure 20 - Same as Fig 19 for 62.4 GeV

  • Figure 21 - Same as Fig 19 for 200 GeV

  • Figure 22 - Illustration of extrapolation methods to find total multiplicity

  • Figure 23 - Total multiplicity and FWHM versus centrality for Au+Au 

  • Figure 24 - Same as Fig 24 for Cu+Cu 

  • Figure 25 - Normalized total particle multiplicity versus (ln(s))^2 

  • Figure 26 - Normalized total particle multiplicity versus centrality

  • Figure 27 - dN/deta versus eta in centrality bins for d+Au @ 200 GeV

  • Figure 28 - dN/deta versus eta for p+p @ 200 & 410 GeV

  • Figure 29 - Extended longitudinal scaling plot for p+p, Cu+Cu, & Au+Au