1 / 32

Quark Matter Feb. 2008 - Jaipur, India

Highlights from PHENIX I: looking into the center of the colored matter Achim Franz, BNL for the PHENIX Collaboration. Quark Matter Feb. 2008 - Jaipur, India. QM87 - Nordkirchen. Z.Phys. C 38, 3. Z.Phys. C 38, 117. Z.Phys. C 38, 79. Z.Phys. C 38, 51. First look at global variables

claudia-kidd
Download Presentation

Quark Matter Feb. 2008 - Jaipur, India

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Highlights from PHENIX I:looking into the center of the colored matterAchim Franz, BNLfor the PHENIX Collaboration Quark Matter Feb. 2008 - Jaipur, India

  2. QM87 - Nordkirchen Z.Phys. C 38, 3 Z.Phys. C 38, 117 Z.Phys. C 38, 79 Z.Phys. C 38, 51 First look at global variables • Multiplicity • Transverse Energy • HBT • J/ A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  3. News A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  4. PHENIX Data-Sets 30 times 3 times Collided 4 different species in 8 years: AuAu, dAu, pp, CuCu 6 energies run: 9.2 GeV, 19 GeV, 22.5 GeV, 62.4 GeV, 130 GeV, 200 GeV A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  5. PHENIX Data-Sets TOF-W: MultiGapResistive Plate chambers with strip readout, ~75ps time resolution, PID at high pT Muon Piston Cal:400 PbWO4 crystalsForward physics in ppReaction plane determination in AA3.1< || < 3.7 Reaction Plane Detector: 2 x 2 rings with 12 scintillator counters each.Reaction plane determination in AATrigger counter for low energy runs = 1.0  1.5,  = 1.5  2.8 A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  6. Global Variables A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  7. meson pT spectra - p p Fit only 0’s with modified Hagedorn function, then apply only mT scaling to describe other spectra. Absolute scale only fit parameter. many different detection and analysis methods, PHENIX is a very versatile detector. A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  8. Transverse Energy dET/dNpart increases with √s and Npart A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  9.  Multiplicity Fluctuations -  space Multiplicity Au Au 200 GeV/c Cu Cu 200 GeV/c P(n) Z.Phys. C 38, 51 Au Au 200 GeV/c Au Au 62.4 GeV/c No strong indicators of critical phenomena over central to mid central Nordkirchen normalized multiplicity  • x = correlation length • correlation strength varies monotonically unless a critical phenomena is reached normalized multiplicity Phys.Rev.C 76, 034903 (2007) K.Homma, Session XVII, 02/09 15:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  10. Particle Ratio Fluctuations Fluctuation in the ratio of two particle species: dyn = 0 : only statistical fluctuations dyn > 0 : larger fluctuations dyn < 0 : damped fluctuations C. Pruneau, S.Gavin, S.Voloshin, Phys. Rev. C 66 044904 (2002) Particle ratio fluctuation show no indication of critical behaviour K.Homma, Session XVII, 02/09 15:20h Poster by E.Haslum A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  11. HBT reverse engineer the correlation function by an input source function. 3D source imaging reconstructs source parameters R.Lacey, Session XVIII, 02/09 14:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  12. Deuterons - B2 deuteron pT = 1.5 deuteron pT = 3.0 Detailed d and d pT spectra in multiple centralities RUN07 TOF-W Inverse of the coalescence parameter B2 is increases with Npart, i.e. expanding source size similar to /K HBT results H.Valle, Session I, 02/05 15:20h Poster: R.Belmont A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  13. Flow A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  14. Flow • azimuthal anisotropy, • pressure gradient from initial spatial asymmetry or eccentricity • second moment of Fourier coefficient, v2, shows good agreement with hydrodynamical models of low viscosity fluid A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  15. v2 - constituent quark flow - QM06 v2 - constituent quark flow Phys. Rev. Lett. 99, 052301 (2007) Phys. Rev. Lett. 98, 162301 (2007) observed quark DOF scaling up to KET/nq ~ 1GeV/c2 for p,K,p,d, S.Huang, Session XII, 02/08 15:20h, Poster by A.Taranenko A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  16. v4 - scales with v2 V4/(nq)2 V4 pT (GeV/c) KET (GeV/c2) KET /nq (GeV/c2) v2 scales with nq, v4 with nq2 partonic degree of freedom S.Huang, Session XII, 02/08 15:20h, Poster by A.Taranenko A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  17. Cumulants - unidentified V2 V2 cumulant method Borghini, Dinh and Ollitrault (Phys.Rev.C 64 054901 (2001)) v2{2} > v2{RP} at pT ~3.5GeV/c indicates onset of non-flow effects M.Issah, Session XII, 02/08 14:40h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  18. v2 - identifiedparticles @ high pT V2 V2 V2 pions kaons protons pT (GeV/c) pT (GeV/c) pT (GeV/c) TOF-W allows test of KET/nq scaling S.Huang, Session XII, 02/08 15:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  19. v2 - identifiedparticles @ high pT V2 V2 + + - + 0 + + - + 0 pT (GeV/c) pT (GeV/c) charged and neutral pions agree well S.Huang, Session XII, 02/08 15:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  20. v2 - high pT - rescaled V2/nq V2/nq KET/nq(GeV/c2) KET/nq(GeV/c2) KET scaling seems breaks for KET/nq > 1GeV/c2 = pT ~ 3.5GeV/c for p change in underlying process, hard scattering ? S.Huang, Session XII, 02/08 15:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  21. v2 - J/e+e- First ever at RHIC, v2 - J/µ+µ- coming soon J/Psi coalescence ? in process, less than half the dataset, muons will help no clear model predictions C.Silvestre, Session XVII, 02/09 15:00h, Poster: C.Luiz da Silva A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  22. 2 Particle Correlations A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  23. 2 particle angular correlations Medium Associated track trigger A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  24. jet parameters Phys.Rev. C 77, 011901 (2008) Phys.Rev. C 77, 011901 (2008) study how medium is affected on the away side study jet peak widths and position A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  25. away side - shape and widths Phys.Rev. C 77, 011901 (2008) Npart PRL 98, 232302 (2007) h - h correlations 1 < pTa < 2.5 < pTt< 4GeV/c With increasing Npart the away side jets broaden and move away from each other but flat over most of Npart M.McCumber, Session VIII, 02/05 16:30h A. Adare, Session IX, 02/08 14:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  26. Jet composition Phys.Rev.C 69, 034909 (2004) nucl-ex/0712.3033 Au Au 200GeV/c h - b(m) correlations 1 < pTa < 2.5 < pTt< 4GeV/c particle ratios in jet approach measured inclusive p/(+K) ratios. high pT particles in peripheral collisions close in on vacuum fragmentation AS Shoulder study: Jet Medium response -> properties of bulk M.McCumber, Session VIII, 02/05 16:30h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  27. Ridge and Shoulder pT Ridge and shoulder pT softer than pp no jet fragmentation slope close to bulk matter head and shoulder show similar behavior consistent with medium response M.McCumber, Session VIII, 02/05 16:30h, H.Pei, Session IX, 02/08 14:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  28. 2+1 -h correlations Trigger p0 Medium Assoc h Conditional charged hadron at high-pt trigger on high momentum 0, require a charged hadron in the back hemisphere of the 0 and integrate the yield of hadrons on the 0 side. yield increases with decreasing centrality for pTcond < 4GeV/c and is flat for > 4GeV/c H.Pei, Session IX, 02/08 14:20h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  29. Geometry A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  30. Jets vs Reaction Plane in central collisions indication of a change in the shape of the correlation function when moving away from the Reaction Plane M.McCumber, Session VIII, 02/05 16:30h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  31. h-h correlations - jet functions unchanged near-side peak in the final jet functions when moving away from Reaction plane, indication for away side modification. M.McCumber, Session VIII, 02/05 16:30h A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

  32. Summary • mT scaling • v2 baryon/meson scaling broken • Coalescence in J/Psi ? • Medium response to jets A.Franz, BNL, PHENIX Highlights - QM08 Jaipur India, 04-10 February 2008

More Related