2. p+p jet+jet (STAR@RHIC)
Au+Au ???
p+p jet+jet
nucleon
parton
jet

3. Back-to-back jet suppression --- 2 particle  correlation ---
Jet modification
--- at pT = 1~4 GeV/c ---
jet p Au
Back-to-back jet suppression
--- 2 particle  correlation ---
Leading
hadrons
Medium
jet p

4. Reconstructed Jet Results at RHIC
STAR preliminary (QM09)

5. Jet - hadron correlation
High Tower Trigger (HT) : (x)=(0.05x0.05) ET>5.4GeV
RHIC-AGS’09, J. Putschke

6. with 7TeV p+p at LHC-ALICE (reference for LHC A+A data)
,Jet,0 - hadron
correlation
Comparisons are
the most important!
Closer and closer to
the initial parton energy
Gamma trigger
Jet (large R) trigger
Jet/multi-particle
correlation analysis
with 7TeV p+p at LHC-ALICE
(reference for LHC A+A data)
(high-multiplicity p+p events) or
with 200GeV Au+Au at RHIC-PHENIX
Jet (small R) trigger
0(hadron) trigger
more and more surface bias
given by energy loss

7. elliptic azimuthal event anisotropy
Anisotropic flow x z y
Reaction Plane (R.P.) x z
sideward flow (v1) x y
elliptic flow (v2)
initial geometry final momentum anisotropy
elliptic azimuthal event anisotropy
low pT high pT
fparticle-FR.P. (rad)
-p p
dN/df

8. Partonic collectivity --- particle identified v2 ---
Phys. Rev. Lett. 99, (2007)
Partonic collectivity
--- particle identified v2 ---
Number of constituent quark scaling in hadron v2 as well as multi-strange baryon v2: v2 is already established during the quark phase before the hadronization. This seems to be true even for heavy quark like charm.
Hadron
QM08: A.Dion
QM06
STAR preliminary

9. Source geometry --- quantum interferometry via HBT correlation ---
common initial
source geometry from
centrality measurement
AGS
RHIC
final source geometry
from HBT measurement
final particle emission
anisotropy from
v2 measurement

10. 200GeV Au+Au -> h-h (run7) mid-central : 20-50%
(pTTrig=2~4GeV/c, pTAsso=1~2GeV/c)
mid-central : 20-50%
(4) s=[-1,0]/8
(5) s=[0,1]/8
in-plane
trigger selection
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
in-plane
(3) s=[-2,-1]/8
(6) s=[1,2]/8
in-plane
associate
regions
c2(data) - c2(flow)
(2) s=[-3,-2]/8
(7) s=[2,3]/8
strong preference of associate particle emission towards the in-plane direction
s = Trig. R.P.
[]
(1) s=[-4,-3]/8
(8) s=[3,4]/8
out-of-plane
trigger selection
average
PHENIX preliminary
significant
not significant compared
with systematic errors
Asso. Trig. (rad)

11. Run10 Au+Au at RHIC-PHENIX
200 GeV run ( ) ---> 8.2 B
62.4 GeV run ( ) ---> 700 M
39 GeV run ( ) ---> 250 M
7.7 GeV run ( ) ---> 1.5 M 温度 密度