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Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba1 Heavy Ion results from RHIC-BNL ShinIchi Esumi Univ. of Tsukuba Contents.

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Presentation on theme: "Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba1 Heavy Ion results from RHIC-BNL ShinIchi Esumi Univ. of Tsukuba Contents."— Presentation transcript:

1 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba1 Heavy Ion results from RHIC-BNL ShinIchi Esumi Univ. of Tsukuba Contents Quark Gluon Plasma Energy loss of parton in QGP Collective expansion of QGP Search for phase transition RHIC spin program

2 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba2 Quark Gluon Plasma (QGP) Early universe Neutron stars Quark-hadron phase transition Deconfinement Properties of QGP

3 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba3 STAR experiment PHENIX experiment Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) 2 large experiments STAR, PHENIX 2 small experiments PHOBOS, BRAHMS sqrt(s NN ) : 5 ~ 200GeV pp, dAu, CuCu, CuAu, AuAu, UU polarized proton beam RHIC and experiments

4 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba4 STAR sqrt(s NN )=200GeV Au+Au central collisions large acceptance lepton, photon, PID

5 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba5 jet pp Au Energy loss of high energy parton in QGP - strong suppression of high p T hadrons in A+A with respect to a geometrical superposition of p+p collisions - no-suppression and slight enhancement in d+A (cold nuclear matter effect) Phys. Rev. Lett. 91, 072303 (2003) Phys. Rev. Lett. 91, 072304 (2003)

6 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba6 Suppression of hadrons No-suppression of direct-photons PRL109, 152302 (2012) arXiv: 1208.2254 - strong suppression of hadrons - no suppression of direct photons at high p T peripheral Au+Au central Au+Au  q

7 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba7  hadrons “  - hadron”correlation measurement PHENIX Preliminary, QM12

8 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba8 Collective expansion of QGP - elliptic (2 nd order) and higher order event anisotropic collectivity and its N quark scaling - hydro-dynamic properties of QGP PHENIX Preliminary, QM12

9 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba9 Thermal photon radiation and collective flow arXiv: 1105.4126 Phys. Rev. Lett. 109, 122302 (2012) Phys. Rev. Lett. 104, 132301 (2010) - significant low p T photon excess - comparable v 2 with hadrons elliptic expansion

10 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba10 Heavy quark energy loss and collective flow u,d,s c,b u,d,s STAR Preliminary, QM12

11 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba11 J/  suppression and collective flow (azimuthal dependence of suppression) “suppression vs enhancement” - color screening - cold nuclear matter effect - recombination, quark coalescence Au spectators Cu spectators participants PHENIX Preliminary, QM12

12 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba12 PHENIX Preliminary, QM12 Transverse shape of QGP (at the end of freeze-out) via 2-parcle interferometry measurement R T-side, R T-out vs (   ), (   ) R T-side oscill. < R T-out oscill. for n=2,3 (central) p T1 p T2 side view size q T-side : R T-side depth + time duration q T-out : R T-out together with v n (p T ) PID fitting with Blast Wave

13 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba13 - strong  2 dependence and left/right asymmetry (coupled with energy loss and flow) - broad out-of-plane correlation enhanced more in central (redistribution and expansion) - weak  3 dependence 2-particle  correlation relative to  2 and  3 plane central 0-10%mid-central 40-50% central 0-10% PHENIX Preliminary, QM12 Au+Au 200GeV, hadron-hadron p T : (2~4) Trig x (1~2) Asso (GeV/c)

14 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba14 Testing the phase diagram with beam energy scan FAIR / J-PARC

15 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba15 Beam energy dependence of R CP and shape of net-proton distribution from enhancement to suppression with increasing the beam energy AGS-SPS-RHIC net-Baryon number fluctuation is expected to reflect the critical point as a non-monotonic behavior STAR Preliminary, QM12

16 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba16 v2v2 v3v3 Beam energy dependence of v 2 and v 3 Smooth trend (not not?) of v 2 and v 3 with beam energy STAR Preliminary, QM12

17 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba17 Directed flow v 1 - strong anti-flow of pion (and p-bar) - small but significant anti-flow of proton - sign change of v1 slope around 10GeV - minimum around 20GeV STAR Preliminary, QM12

18 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba18 Charge asymmetry with respect to reaction plane as a possible indication of local parity violation in QGP with strong B-field at non-central heavy ion collisions L or B X Y dN/d  ~ 1+ 2v n cos(n(  -  )) + 2a  sin(  -  ) + … ~ - STAR Preliminary, QM12

19 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba19 Gluon Polarization  G(x) Integrated Gluon Polarization Non zero ! ~ 0.1 - gluons can make a very significant contribution to the spin of the proton - Need to extend the measurements to low-x region where abundant gluons exist

20 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba20 Sea Quark Polarization Measurements - Direct sea quark measurement - Fragmentation function free (no model dependence) - Improve knowledge from semi-inclusive DIS measurements significantly. - x10 statistics in Run 2013 Polarized Sea-Quark Distribution

21 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba21 Summary Quark Gluon Plasma Energy loss of parton in QGP Collective expansion of QGP Search for phase transition RHIC spin program

22 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba22 backup slides

23 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba23

24 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba24 PHENIX, QM12 extracted by BW fitting with spectra + v 2,3,4 of ,K,p extracted from R Tside by  HBT

25 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba25

26 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba26 PHENIX, QM12 - strong  2 dependence and left/right asymmetry coupling with geometry and/or expansion - almost no  3 dependence (poor  3 resolution) mid-central collisions

27 Hadron Collider Physics 2012, 12/Nov/2012, KyotoShinIchi Esumi, Univ. of Tsukuba27 - out-of-plane correlation enhanced (strong jet quenching and collective expansion) - some weak  3 dependence central collisions PHENIX, QM12


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