fK+K- analysis in Run3: Scopes of the paper

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Presentation transcript:

fK+K- analysis in Run3: Scopes of the paper Dipali Pal Vanderbilt University Light/heavy PWG February 10, 2005

d-Au fKK results What are the results we have from fK+K- analysis in d-Au collisions? Line shape Yield Particle ratio Rcp and RdA (with p-p analysis)

Line shape analysis (I) d – Au collisions at √sNN = 200 GeV f K+K- Minimum-bias Normalized above M = 1.1 GeV/c2 Bin size: 1 MeV/c2 Fitting function: BW convolved with Gaussian Mass resolution function of s ~ 1.4 MeV/c2 <m> = 1.01911 ± 0.00016 ± 0.00085 GeV/c2 (stat) (syst) G = 4.567±0.441 (stat)± 0.313 (syst) MeV/c2 S = 786 ± 34, S/B = 1/0.47

Line shape analysis-II PHENIX Preliminary d – Au @ √sNN = 200 GeV d – Au @ √sNN = 200 GeV fK+K- fK+K- PDG PDG no cold nuclear line shape modification of f mass spectra. See discussions in PPG016 (Section IV-A)

Yield analysis: dN/dy About a factor of 3 increase in dN/dy per participant pair from d-Au to Au – Au! dN/dy increases with centrality and from d-Au to Au-Au system.

Yield analysis: Inverse slope Au – Au @ √sNN = 200 GeV (PHENIX Final) The inverse slope is almost constant within different centrality classes of d-Au and is consistent with Au-Au system.

Particle ratio - I

Particle ratio - II CERN SPS NA49 (√sNN = 17 GeV) results: There is a factor of ~1.5 increase in yield per participant from p-A to A-A system. PHENIX (√sNN = 200 GeV) shows a factor of ~3 increase in f meson yield per participant pair in Au-Au compared to d-Au.

Particle ratio - III CERN SPS NA49 (√sNN = 17 GeV) results: PHENIX (√sNN = 200 GeV)

Rcp (d-Au) f  K+K- pion

d-Au & pp comparison No Npart scaling With Npart scaling

RdA (Yield_d-Au/<Ncoll>)/(Yield_pp/<Ncoll>)

Outlook Results from d-Au phiKK analysis. Are we ready to go for a PPG on phi in Run3? -- Journal? -- What are the other topics on phi? -- e+e- in d-Au -- K+K- pp Any other input?