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

2. 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)

3. 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> = ± ± GeV/c2
(stat) (syst)
G = 4.567±0.441 (stat)± (syst) MeV/c2
S = 786 ± 34, S/B = 1/0.47

4. Line shape analysis-II
PHENIX Preliminary
d – √sNN = 200 GeV
d – √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)

5. 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.

6. Yield analysis: Inverse slope
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.

7. Particle ratio - I

8. 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.

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

10. Rcp (d-Au)
f  K+K-
pion

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

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

13. 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?