ShinIchi Esumi, Univ. of Tsukuba Hard - Soft Interplay at RHIC relation between v2 and jet-modification ShinIchi Esumi Univ. of Tsukuba to replace the following talk --- Bridging the soft and the hard at RHIC --- Jiangyong Jia 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Two particle  correlation measurements away side suppression at relatively high pT away side modification at relatively low-middle pT 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Single particle RAA and v2 measurements various things are changing at low-middle pT region. 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba (1) geometrical (almond shaped) effect or (2) dynamical (elliptic expansion) effect (trigger direction) near side away side (head region) mach-cone (shoulder region) ASSO-TRIG>0 ASSO-TRIG<0 thin side thick side ASSO  TRIG -p 0 p 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba 200GeV Au+Au -> h-h (run7) (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) 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba QM09 STAR 200GeV Au+Au 20-60% (pTTrig=3~4GeV/c, pTAsso=1~1.5GeV/c, >0.7, Trig-R.P.<0) in-plane trigger selection out-of-plane trigger selection strong preference of associate particle emission towards the in-plane direction QM08 STAR STAR Preliminary 3<pTtrig<4, 1.5<pTtrig<2.0 GeV/c Ridge Jet 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Toy model simulation with flow + jet (strong R.P. dependence) random mixing with min. bias flow random mixing with zero bias flow NAsso (1~2 GeV/c) : soft : 8 hard : 1 x fJet x 1.25[1/trig] NTrig (2~4 GeV/c) : soft : 1 x (1-fJet) hard : 1 x fJet fJet : 0.25 v2Trig : 19.6% v2Asso : 13.1% (flow) : 13.6% (m.b.) : 14.9% (bias) : 25.5% (jet) (1) (2) (3) (4) (5) (6) (7) (8) 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Toy model simulation v2Asso : 13.1% (flow) : 13.6% (m.b.) : 14.9% (bias) : 25.5% (jet) random mixing with min. bias flow subtraction random mixing with zero bias flow subtraction qualitatively consistent with jet trigger biased v2 measurements 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Z.W.Lin, J.Jia, S. Mohapatra, S. Esumi AMPT(v1.25/v2.25 string melting) : Au+Au 200GeV b=7fm (with embedding option) no embedding 7GeV in-plane 7GeV out-of-plane 7GeV at 45 deg 7GeV at 45 deg mixed events with the same triggered (embedded) events no embedding 7GeV in-plane out-of-plane at 45 deg at 45 deg 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Z.W.Lin, J.Jia, S. Mohapatra, S. Esumi AMPT(v1.25/v2.25 string melting) : Au+Au 200GeV b=7fm (with embedding option) no embedding 7GeV in-plane 7GeV out-of-plane 7GeV at 45 deg 7GeV at 45 deg mixed events without the triggered (embedded) events --- mixed events from min.bias events --- no embedding 7GeV in-plane out-of-plane at 45 deg at 45 deg 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba Summary and Outlook (in back-ups) (1) re-distribution of lost energy from jet quenching at low-middle pT (2) strong R.P. dependence of the Mach-cone/ridge shape strong preference of associate particle emission towards the in-plane (3) trigger particle bias in soft particle v2 can be understood qualitatively what would be the true v2 to be compared with hydro-model? (4) hard/soft coupling with transverse/longitudinal geometry/dynamics (5) controlled direction/depth bias with reconstructed jets 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba forward-backward asymmetry left-right asymmetry y 0  x z Takahito Todoroki : session BB 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

ShinIchi Esumi, Univ. of Tsukuba ,Jet,0 - hadron correlation Comparisons are the most important! RHIC-AGS’09, Y. S. Lai Closer and closer to the initial parton energy Gamma trigger Jet (large R) trigger STAR Preliminary Jet (small R) trigger 0(hadron) trigger more and more surface bias given by energy loss Au+Au 0~10% QM09, M. Ploskon 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba

J-cal for LHC-ALICE experiment for back-to-back jets measurements 15/Oct/2009, DNP/JPS, Hawaii ShinIchi Esumi, Univ. of Tsukuba