sPHENIX upgrade at mid-rapidity
ShinIchi Esumi
Inst. of Physics, Univ. of Tsukuba

contents :• Hadrons• Electrons• Photons• JetsWorkshop on :“Future Directionsin High Energy QCD”
20-22/Oct/2011
Nishina Hall, Riken, Japan

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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sPHENIX&ePHENIX

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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PHENIX

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba3

Aerogel Cherenkov Counter

Time of FlightpKπ
TOF vs 1/p (with ACC veto)

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

4Thermal / chemical
freeze-out properties
from PIDed spectra
and ratios

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

5Partonic and hadronic
expansion / collectivity
from PIDed v2

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

6Advanced MRPC

ASICs for fast timing

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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FAST mRPC TOF for PID from Mickey Chiu

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

8Beam Energy Scan Programfrom STAR experiment
 net-proton distribution
 n-quark scaling of v2
Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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(Amazing) similarity between RHIC and LHC (v2 and RAA)PHENIX

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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Small deviations in (mT-m0)/nq scaled v2
Pb+Pb 2.76TeV

Au+Au 200GeV

Au+Au 39GeV

protonprotonPHENIX Preliminary

PHENIX Preliminary

M. Krzewicki, QM11

roughly (mT-m0)/nq scaled for all energies
larger pT shift for heavier particles
radial flow increases with energy
Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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Geometrical source anisotropy
via HBT measurement at theend of freeze-outT. Niida, WPCF2011, 20/Sep/2011

Future Directions in High Energy QCD, 20/Oct/2011, Riken

εfinalIt might be different
from the v2-v4 relation
ShinIchi Esumi, Univ. of Tsukuba

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Ring-Imaging Cherenkov Detector

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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Charm suppression andflow from single electrons

Thermal photon spectrafrom electron-pairs (γ*)

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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Direct photon v2

Direct photon RAA
prompt γ dominance :no suppression andsmall v2 at high pTlarge v2 for thermal photon
from combined real andvirtual γ measurements
Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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Electron-pair mass spectra in p+p / Au+Au

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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0.65

Hadron Blind
Detector

mPairs inCentral Arms
θpair

Cherenkov
blobse+B≈01.21 me-opening
angle

Pairs matched
to HBD

Pairs after
HBD rejection

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

17Charged hadrons and jets
High pT photons and electrons

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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J/Psi RAA and v2

different J/ψ RAA(pT)
dependence between
RHIC( ) and LHC( )Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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ΔR<0.8

ΔR>0.8Jet energy asymmetry+Out-of-Cone radiation

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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IAA (pTh:2-7GeV/c, pTγ:5-12) vs Npart

Fragmentation function
with direct photon trigger

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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γ,Jet,π0 - hadroncorrelation

RHIC-AGS’09, Y. S. Lai

Comparisons are
the most important!

to yr
es nergolecnd rtonar
ser ial paolge
C initgitrathemmaer
Gggi) tr
Rrgeal(Jeterggtri)ll Ra(smteJergig) trndroaiasb0 (hπacefrsu serolosmydgan enerer
mo en bygiv

Future Directions in High Energy QCD, 20/Oct/2011, Riken

STAR Preliminary

Au+Au 0~10%

QM09, M. Ploskon
ShinIchi Esumi, Univ. of Tsukuba

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v2 in p+p

Future Directions in High Energy QCD, 20/Oct/2011, Riken

v3 in A+A

ShinIchi Esumi, Univ. of Tsukuba

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Higher harmonic event anisotropy and azimuthal correlation

vnATLAS Preliminary

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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200GeV Au+Au -> h-h (run7)c2(data) - c2(flow)

in-planetrigger selection

out-of-plane
trigger selection(4) φs=[-1,0]π/8(5) φs=[0,1]π/8(pTTrig=2~4GeV/c, pTAsso=1~2GeV/c)

mid-central : 20-50%(1)(3) φs=[-2,-1]π/8(6) φs=[1,2]π/8(2)in-plane
associate
regions

(7)

(3)

(6)

(4)

(5)

(5)

(4)

(6)

(3)

(2) φs=[-3,-2]π/8(7) φs=[2,3]π/8(1) φs=[-4,-3]π/8(8) φs=[3,4]π/8(8)

(7)

(2)
(8)

strong preference ofassociate particle
emission towards thein-plane direction

in-plane(1)φs = φTrig. − ΦR.P.
[−π/2,π/2]

average

PHENIX preliminarysignificant

Δφ = φAsso. − φTrig. (rad)Future Directions in High Energy QCD, 20/Oct/2011, Riken

not significant comparedwith systematic errors

ShinIchi Esumi, Univ. of Tsukuba

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the same data in polar plots (R.P. is x axis)--- associate distribution for a given trigger direction --out-of-plane trigger
3π/8 < | φTrig. - φR.P. | < π/2

200GeV Au+Au -> h-h(pTTrig=2~4GeV/c, pTAsso=1~2GeV/c)
in-plane trigger| φTrig. - φR.P. | < π/8penetration

mid-central(20-50%)

R.P.R.P.

central(0-20%)

surfaceaveraged over
all trigger angles

peripheral(50-93%)base line

Trigger angle

Future Directions in High Energy QCD, 20/Oct/2011, Riken

PHENIX preliminary

ShinIchi Esumi, Univ. of Tsukuba

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heavy-flavor (b/c tagged) electron
identified open heavy-flavor meson
multi-hadron/jet correlations with R.P. / large ηTrig
higher harmonic event anisotropy
Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

27Summary Calorimetric detector for jets, electrons and photons at high pT
 How about low pT electrons, photons and identified hadrons?
 What about fluctuation/correlation variables with particle
identification using a large acceptance detector…

Future Directions in High Energy QCD, 20/Oct/2011, Riken

ShinIchi Esumi, Univ. of Tsukuba

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