Eitaro Hamada, Univ. of Tsukuba Reaction plane dependence of multi particle azimuthal correlation in √sNN=200GeV Au+Au collisions at RHIC-PHENIX (RHIC-PHENIX実験√sNN=200GeV金+金衝突における多粒子相関の反応平面依存の研究) Eitaro Hamada, Univ. of Tsukuba for the PHENIX collaboration RHIC(200GeV) AGS (4GeV) BNL PHENIX experiment 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba QGP x z Hadron 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Jet modification --- at pT = 1~4 GeV/c --- jet p Au Back-to-back jet suppression --- 2 particle  correlation --- Leading hadrons Medium jet p 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba h-h correlation at “p+p 200GeV” vs “Au+Au 200GeV central 0-20%” associate pT window Phys. Rev. C 78, 014901 (2008) trigger pT window 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Reaction plane dependent energy loss --- a dominant source of v2 at high pT --- in-plane out-of-plane QM09, C. H. Chen in-plane out-of-plane near-side in-plane out-of-plane away-side QM04: STAR 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Head Shoulder head: yield confirms simple picture of energy loss vs. path length; in- and out-of-plane show similar away-side width shoulder: geometry effects harder to　disentangle QM09, W. G. Holzmann 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba 200GeV Au+Au -> h-h (run7) (pTTrig=2~4GeV/c, pTAsso=1~2GeV/c) mid-central : 20-50% QM09: PHENIX (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 c2(data) - c2(flow) in-plane associate regions (2) s=[-3,-2]/8 (7) s=[2,3]/8 s = Trig. R.P. [] strong preference of associate particle emission towards the in-plane direction (1) s=[-4,-3]/8 (8) s=[3,4]/8 out-of-plane trigger selection average PHENIX preliminary Asso. Trig. (rad) 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Summary and outlook * Strong high pT jet suppression has been observed. * Jet shape modification and enhancement from re-distribution of the lost energy has been observed at relatively low pT correlation. * Reaction plane dependence from high pT correlation analysis shows path length dependence of suppression. * Away side head region also shows the geometrical path length effect in relatively low pT correlation analysis. * Away side shoulder region shows some non trivial effect, which also gives left/right asymmetry. * Expected strong coupling with elliptic flow parameter: v2 . 2+1 correlation as well as multi-particle correlation in progress particle identified correlation (baryon, meson, hadron, direct-…) 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Dq*=p Df*=0 PHENIX Preliminary Cone like Jets Deflected Jets jet p Au 3-particle correlation “Df12 vs Df13” d+Au Collisions Both measurements prefer Mach-cone scenario. (1-2)/2 Au+Au Central 0-12% Cone angle (radians) No pT dependence, too. STAR Preliminary (1-2)/2 pT (GeV/c) STAR Preliminary 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Df = fassoftrig Dh = hasso htrig 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba SQM09, F. Wang 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba

Eitaro Hamada, Univ. of Tsukuba Jet quenching --- energy loss of parton in QGP --- No energy loss for g‘s Energy loss for quark and gluon jets (similar even for heavy quark) RAA 20/Mar/2010, JPS, Okayama, Japan Eitaro Hamada, Univ. of Tsukuba