1. Jet Tomography and Particle Correlations in Heavy-Ion Collisions Barbara Betz Thanks to: Miklos Gyulassy, Jorge Noronha, Dirk Rischke, Giorgio Torrieri Phys. Rev. C 79, 034902 (2009); Nucl. Phys. A 830, 777c (2009); Phys.Rev. Lett. 105, 222301 (2010); arXiv:1012.4418 [nucl-th] arXiv:1102.5416 [nucl-th]

2. 2 HIC Facilities initial state pre-equilibrium expanding fireball hadronization hadronic phase and freeze-out S. Bass, Talk Quark Matter 2001 RHIC FAIR LHC 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz  RHIC, BNL: 2000 – … p+p, d+Au, Cu+Cu, Au+Au  LHC, CERN: 2008/9 - … p+p, Pb+Pb  FAIR, GSI: ~2016 - … accelerates ions from p to U ??

3. 303/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Tomography and Correlations What can be extracted about medium proper- ties? What do conical correlations tell us? What is the role/impact of fluctuating initial conditions? Test sensitivity of azimuthal dependence of single and dihadron nuclear modification factors 4 < p T trigger < 6 GeV/c 0.15 < p T assoc < 4 GeV/c STAR, Nucl. Phys. A 774, 129 (2006) PHENIX, Phys. Rev. Lett. 105, 142301 (2010) The Medium Initial Conditions

4. 4 2 Major RHIC Results 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

5. 5  Reproducing the elliptic flow v 2 P. Romatschke and U. Romatschke, Phys. Rev. Lett. 99, 172301 (2007) Medium behaves like an almost ideal fluid BNL press release, April 18 2005. 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Particles don‘t interact, expansion independent of initial shape Particles interact, expansion determined by density gradient „ dust “ fluid Data can be described by hydrodynamics with small Fluid-like Medium

6. 6 Jet Quenching Like in medicine, hard probes can be used to investigate the medium properties If created matter is opaque, a jet depositing its energy should eventually disappear jet suppression STAR, Phys. Rev. Lett. 91 (2003) 072304 4 < p T trigger < 6 GeV/c p T assoc > 2 GeV/c What can the energy lost tell us about the medium properties and the initial conditions? Trigger particle University Wuppertal, “Schul-Vorlesungen zur Physik” 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

7. 7 The Medium 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

8. 8 Jets in HIC I By observation:  Confirm fast thermalization  Study EoS of the fluid Mach cone angle sensitive to EoS Can energy lost by jets tell us something about medium properties? IF the medium behaves like a fluid: Mach cones have to occur because of fluid dynamics

9. 4 < p T trigger < 6 GeV/c 0.15 < p T assoc < 4 GeV/c Au+Au / p+p = 200 GeV PHENIX, Phys. Rev. C 77, 011901 (2008) 9 Jets in HIC II STAR, Nucl. Phys. A 774, 129 (2006) Reflect interaction of jet with medium Redistribution of energy to lower p T - particles Re-appearance of the away-side for low and intermediate p T assoc H. Stöcker, Nucl. Phys. A 750, 121 (2005), J. Casalderrey-Solana et al. Nucl. Phys. A 774, 577 (2006) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

10. 10 Experimental Studies 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

11. Many more studies: path-length dependence, centrality dependence, energy dependence 11 STAR, Phys. Rev. C 82, 024912 (2010) see also PHENIX, Phys. Rev. C 77, 011901 (2008) Position of away-side peaks does not change strongly with p T assoc Not due to Cherenkov gluon radiation What happens to larger p T trigger ? Jet - Studies in HIC I 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz A. Sickeles [PHENIX], Eur. Phys. J. C 61, 583 (2009); PHENIX, Phys. Rev. Lett. 97, 052301 (2006); J. Jia, Eur. Phys. J. C 62, 255 (2009)

12. 12 Some caveats 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

13. 13 Background Subtraction How can one proof/disproof the two-source model? J. Ulery [STAR], PoS LHC07, 036 (2007) D. d’Enterria and BB., Springer Lecture Notes (2008) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz  Assumption (Two-source model) : No correlations between flow anisotropy and jets ZYAM (Zero Yield At Minimum)  Subtraction of: estimated elliptic flow modulated background  can leads to: double peaked structure Background: Particle correlation from elliptic flow Other methods A. Sickles et al, Phys. Rev. C 81, 014908 (2010) STAR, arXiv: 1102.2669 [nucl-ex]

14. 14 3-Particle Correlations J. Ulery [STAR], Int. J. Mod. Phys. E 16, 2005 (2007) p trig T =3 – 4 GeV, p assoc T =1 – 2 GeV  Three-particle correlations seem to corroborate Mach cone idea  What’s the effect of ZYAM?  No agreement with 3-particle cumulant method C. Pruneau, Phys. Rev. C 79, 044907 (2009) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Deflected jetMach Cone p trig T >3 GeV, p assoc T =1 – 2 GeV C. Pruneau, Talk at the Workshop on ‘Critical Asessment of Theory and Experiment on Correlations at RHIC’, BNL, February 2009

15. 15 Theoretical Approach 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

16. 16 Modelling of Jets STAR, Phys. Rev. Lett. 95, 152301 (2005) residue of energy and momentum given by the jet Assumption of isochronous/isothermal freeze-out No interaction afterwards mainly flow driven  Conversion into particles Freeze-out: Jets can be modelled using (ideal) hydrodynamics: e +p v.  Medium created in a HIC can be described using hydrodynamics 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

17. 17 The Static Medium 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

18. 18 Stopped Jet I Applying a static medium and an ideal Gas EoS for massless gluons Assume: Near-side jet is not modified by medium Maximal fluid response Jet decelerating from v=0.999 according to Bethe-Bloch formalism a=-1.36 GeV/fm Simplest back-reaction from the medium Bragg Peak adjusts path length BB et al., Phys. Rev. C 79, 034902 (2009) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

19. 19 Stopped Jet II Mach cone for sound waves Diffusion wake t=4.5/v fm BB et al., Phys. Rev. C 79, 034902 (2009) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

20. 20 Stopped Jet III Diffusion wake causes peak in jet direction Normalized, background-subtracted isochronous Cooper-Frye at mid-rapidity Energy Flow Distribution Assuming: Particles in subvolume will be emitted into the same direction p T = 5 GeV BB et al., Phys. Rev. C 79, 034902 (2009) Any conclusions about deposition mechanism??? 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

21. 2103/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz The Expanding Medium

22. 22 Expanding Medium I Consider different jet paths b=0 Apply Glauber initial conditions and an ideal Gas EoS for massless gluons Focus on radial flow contribution Experimental results based on many events A. K. Chaudhuri, Phys. Rev. C 75, 057902 (2007), A. K. Chaudhuri, Phys. Rev. C 77, 027901 (2008) Two-particle correlation (T freeze-out < T crit = 130 MeV): near-side jet dE/dt = 1 GeV/fm Jet 150 E tot = 5 GeV 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

23. 23 Expanding Medium II E tot = 5 GeV broad away-side peak double peaked structure due to non-central jets T trig p T trig = 3.5 GeV PHENIX, Phys. Rev. C 77, 011901 (2008) v jet =0.999 BB et al., Phys. Rev. Lett. 105, 222301 (2010) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

24. 24 Expanding Medium III E tot = 10 GeV Strong impact of the Diffusion wake broad away-side peak double peaked structure Causes smaller dip for p T =2 GeV T trig p T trig = 7.5 GeV 6 < p T trigger < 10 1.5 < p T assoc < 2.5  Yield Path length dependence Centrality dependence 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz STAR, Phys. Rev. C 82, 024912 (2010) BB, arXiv:1012.4418 [nucl-th]

25. 25 Expanding Medium IV Conical emission angle also appears for subsonic jets Not a Mach cone Considering a bottom quark (M=4.5 GeV), propagating at v jet < c s (energy-momentum deposition scenario) T assoc p T assoc = 2.0 GeV Cu+Cu: Similar away-side shoulder width, T assoc double-peak structure reappars for p T assoc = 3 GeV PHENIX, PRL98, 232302 (2007) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz BB et al., Phys. Rev. Lett. 105, 222301 (2010)

26. 26 Some more caveats 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

27. 27 Hot Spots I Can fluctuating initial condition explain the 2+3-particle correlations? Takahashi et al, PRL 103, 242301 (2009) F. Grassi, Talk at the Glasma Workshop, BNL, May 2010 R. Andrade et al., J. Phys. G 37, 094043 (2010) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

28. 28 Hot Spots II Check with one single hot spot 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Au,  e/e 0 = 2

29. 29 Hot Spots III Can hot spots explain everything? There is a superposition of jets and fluctuating initial conditions 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz T assoc p T assoc = 2.0 GeV T trig p T trig = 8.0 GeV T trig p T trig = 3.5 GeV Both lead to double-peak structureCoalesced peak only for jet events Heavy quark jets need to be studied BB, arXiv:1012.4418 [nucl-th]

30. 30 Heavy-flavor results 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz e-h correlations from heavy-flavor decay show a double-peak structure on the away-side Clear indication that the signal is not just background fluctuation A. Adare et al. [PHENIX], arXiv: 1011.1477[nucl-ex]

31. 31 Why v 3 deformations cannot be the whole story p trig T =3 – 4 GeV, p assoc T =1 – 2 GeV What are the consequences of triangular flow? The latter case should not be subtracted! v 3 could be due to initial conditions (hot spots) OR due to a jet traversing the medium 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz  Correlation in  1 -  2  1/2 120°  No correlation in  1 -  2 B. Alver et al., Phys. Rev. C 81, 054905 (2010) 120° Shock front?? ~ 120 J. Ulery [STAR], Int. J. Mod. Phys. E 16, 2005 (2007) B. Alver, Talk at the Glasma Workshop, BNL, May 2010

32. 32 Fluctuating Initial Conditions 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

33. 3303/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Initial Conditions  Studying heavy-ion collisions requires a good understanding of the role of the initial conditions:  Glauber model: incoherent superposition of p+p collisions  Color Glass Condensate (CGC): saturation effects are included  They differ:  initial temperature gradients  initial high-p T parton distribution  distance travelled by each parton Leads to a different opacity estimate B. Alver, Talk at the Glasma Workshop, BNL, May 2010 CGC Glauber L. McLerran, Talk at a the CP Violation Workshop, BNL, April 2010

34. 3403/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Opacity of the Medium  Exploring the properties of the strongly- coupled sQGP jet quenching: signal for creation of opaque matter (QGP) S. Bass et. al., PRC 79 (2009), 024901 defined via:  Current description commonly based on pQCD though medium is supposedly sQGP D. D’Enterria, Lect. Notes Phys.785 (2010), 285

35. S. Bass et. al., PRC 79 (2009), 024901 3503/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Caveat  pQCD descriptions disagree in their prediction of the azimuthal anisotropy of high-p T hadrons, characterizing due to v 2 =v 2 ( l ) v 2 is sensitive to the path length dependence of energy loss, scaling as dE/dx ~ l z : z=1 : pQCD z=2 : AdS/CFT (on-shell partons) z>2 : AdS/CFT (off-shell partons) M. Gyulassy et. al., PRL 85 (2000), 5535 S. Gubser et. al., JHEP 0810 (2008), 052; P. Chesler et.al., PRD 79 (2009) 125015

36. 36 Energy-Loss Mechanisms 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz A. Adare et al, Phys. Rev. Lett. 105, 142301 (2010)  First investigation of v 2 (N part ) and R AA (N part ) for p T > 5 GeV hadrons is based on J. Jia et. al., PRC 82 (2010), 024902 simple jet absorption model  Once R AA (N part =350) ~ 0.18 for 0-5%  0 data  pQCD-like energy loss fails to reproduce v 2 (N part )  AdS/CFT-like energy loss describes data for CGC initial conditions pQCD-likeAdS/CFT-like

37. 37 Generic Energy Loss Model 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

38. 38 Generic Energy Loss Model 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Choosing an ansatz for the energy loss   = 2fm, one can determine the R AA (N part ), v n (N part ) P: momentum of the jet(s) a,z: parameters controlling the jet-energy and path-length dependence  : being fixed thus that R AA (N part =350) ~ 0.18 for most central data and considering Bjorken expansion via CGC/KLN: H. Drescher et. al., PRC 76 (2007) 024905 Glauber: B.Betz et.al., arXiv:1102.5416 [nucl-th]

39. 39 R AA and v 2 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz z=1z=2 Having fixed  for R AA (N part =350) ~ 0.18 R AA (N part ) can be reproduced z=1: v 2 not reproduced z=2: v 2 reproduced for CGC initial cond. B.Betz et.al., arXiv:1102.5416 [nucl-th] a=0.3 Small fluctuations for R AA (N part ) large fluctuations for v 2 (N part ) Not straightforward to distinguish between initial conditions

40. 4003/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz R AA vs. I AA, and v n vs. v n I AA  Extend to dijet analysis, but considering  away =  In contrast to Jia’s model, we fit the R AA vs. I AA  v n vs. v n I AA :  clear shift between Glauber and CGC model  saturation effect for larger z B.Betz et.al., arXiv:1102.5416 [nucl-th] J. Jia et.al., arXiv:1101.0290 [nucl-th]  It is necessary to always determine the mean and the with of a correlation!

41. 41 Higher Harmonics 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz z=1z=2  v 3 ≠0 event-by- event,  v 4 similar for average and event-by-event initial conditions Not suitable to distinguish between Glauber and CGC initial conditions Higher harmonics are more sensitive to local gradients, but also to event- by-event fluctuations larger v 3,4 fluctuations B.Betz et.al., arXiv:1102.5416 [nucl-th]

42. 42 Path-length dependence 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz  Study the path-length dependence at b=8fm:  Once R AA is fixed via ,  sensitivity remains mostly for v 2 and v 3 saturation effect occurs for larger z described by AdS/CFT off-shell partons S. Gubser et. al., JHEP 0810 (2008), 052; P. Chesler et.al., PRD 79 (2009) 125015  Measurement of virtuality in jet-photon collisions & v 2,3 could lead to signature of AdS/CFT dynamics & microscopic mechanism of energy loss. B.Betz et.al., arXiv:1102.5416 [nucl-th]

43. Summary  „Conical“ signal can be created (general effect): by averaging over deflected wakes created by jets. Structure cannot directly be related to EoS, but is a measure for the flow even for subsonic jets Necessary to study heavy-flavor tagged jets. 43  „Conical“ correlations could arise from multiple non-Mach sources 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz  Investigated higher Fourier harmonics of jet quenching Showing that they are remarkably insensitive to the Glauber and KLN/CGC model initial conditions  Studied the path-length dependence for larger exponents a saturation effect occurs for larger exponents favoring an AdS/CFT energy loss

44. 44 Backup 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

45. 45 Investigation of path length dependence: Double-peaked structure becomes more pronounced out-of-plane A. Sickeles [PHENIX], Eur. Phys. J. C 61, 583 (2009) Jet - Studies in HIC 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Could be due to deflection

46. 46 Centrality dependence: double-peaked structure for central collisions one peak structure for very peripheral collisions PHENIX, Phys. Rev. Lett. 97, 052301 (2006) J. Jia, Eur. Phys. J. C 62, 255 (2009) Jet - Studies in HIC Energy Scan: double-peaked structure occurs at about the same angle for different collision energies Mach cone??? 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

47. 47 Stopped Jet Jet stops after t=4.5/v fm Vorticity conservation t FO =4.5/v fmt FO =6.5/v fmt FO =8.5/v fm Diffusion wake still present BB et al., Phys. Rev. C 79, 034902 (2009) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

48. 48 Stopped Jet t FO =4.5/v fmt FO =6.5/v fmt FO =8.5/v fm Diffusion wake causes peak in jet direction Larger impact of thermal smearing BB et al., Phys. Rev. C 79, 034902 (2009) 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

49. 4903/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Still influence of diffusion wake Transverse momentum deposition: from explosion of matter t=4.5/v fm Vorticity conservation Punch – Through Jet BB et al., Phys. Rev. C 79, 034902 (2009)

50. 50 BAMPS: Boltzmann Approach of MultiParton Scatterings A transport algorithm solving the Boltzmann equations for on-shell partons with pQCD interactions C. Greiner, Talk at the Opening Symposium of the JET Collaboration, Berkeley, June 2010 Box scenario, no expansion, massless Boltzmann gas interactions, 2 -> 2 The shock front (Mach front) gets broader and vanish with more dissipation 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Mach Cones in Transport

51. 5103/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Different Jet-Energy Loss Modells

52. 5203/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Modelling Jets using … Conclusion about Mach cones? pQCD AdS/CFT P. Chesler and L. Yaffe, Phys. Rev. D 78, 045013 (2008) R. Neufeld et al, Phys. Rev. C 78, 041901 (2008) Strongly-coupled theory Pointing vector perturbation Momentum density perturbationEnergy density perturbation Weakly-coupled theory v=0.75 v=0.99955

53. 5303/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Non-Mach correlations caused by Neck region Jets in AdS/CFT J. Noronha et al., Phys. Rev. Lett. 102, 102301 (2009)

54. 5403/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Heavy Quark Jets

55. 5503/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Heavy Quark Jets Compare weakly and strongly coupled models using heavy punch-through jet pQCD: Neufeld et al. source for a heavy quark AdS/CFT: Stress tables with R. Neufeld et al, Phys. Rev. C 78, 041901 (2008) p T = 3.14 GeV BB et al., Phys. Lett. B 675, 340 (2009) No Mach-like peaks: AdS/CFT: Strong influence of the Neck region Static medium and isochronous freeze-out needed for comparison t=4.5/v fm S. Gubser et al, Phys. Rev. Lett. 100, 012301 (2008) BB et al., Phys. Lett. B 675, 340 (2009) J. Noronha et al., Phys. Rev. Lett. 102, 102301 (2009)

56. 56 Expanding Medium Comparing different deposition scenarios, one sees that „cone“ angle approximately the same for different deposition scenarios T assoc p T assoc = 2.0 GeV: No double-peaked structure for pure energy deposition scenario due to thermal smearking T trig p T trig = 3.5 GeV T assoc p T assoc = 3.0 GeV T assoc p T assoc = 2.0 GeV v jet =0.999 BB et al., arXiv: 1005.5461 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

57. 57 Initial Fluctuations I P. Sorensen J. Phys. G 37, 094011 (2010), B. Alver et al., Phys. Rev. C 81, 054905 (2010) Glauber initial conditions: due to symmetry, odd Fourier components vanish higher Fourier components may occur Fluctuating initial conditions: B. Alver, Talk at the Glasma Workshop, BNL, May 2010 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

58. 58 Initial Fluctuations II B. Alver et al., arXiv: 1007.5469 B. Alver et al., Phys. Rev. C 81, 054905 (2010), B. Alver et al., arXiv: 1007.5469 H. Petersen et al., arXiv: 1008.0625 v 3 not negligable small v 3 is extensively studied Calculating v 3 using a viscous hydro model with initial conditions deformed according to the eccentricities from a Glauber and a KLM (CGC) model 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz

59. 59 Insensitivity of higher v n ‘s 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz  Why are the v n ‘s at high-p T so insensivite to initial conditions while the v n ‘s of soft particles are?  viscous forces are driven by local gradients  jet absorption is driven by global differences in the integrated These two effects are different, especially event-by-event  Glauber and CGC in. cond. are tuned to reproduce the observed multiplicites is similar, even if local gradients of T are different Hydrodynamics and tomography lead to very different results.

60. 60 Flow Subtraction Subtraction of v 2 and v 3 leads to double-peak structure 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Jun Xu et al, Phys. Rev. C 83, 021903 (2011) Subtraction of larger v n only leads to one broad away-side peak 4 < p T trigger < 6 GeV/c 0.15 < p T assoc < 4 GeV/c STAR, Nucl. Phys. A 774, 129 (2006) similar shape

61. 61 (2+1)d correlations 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz H. Agakishiev et al. [STAR], arXiv:1102.2669[nucl-ex] 2 trigger, opposite to each other + 1 associated jet Still using ZYAM Trigger particle Trigger particle It needs to be shown that jet quenching results can be reproduced for larger p T assoc Structure on the away-side 1.5 GeV < p T assoc < p T trig1 5 < p T trig1 < 10 GeV/c p T trig2 < 4 GeV/c

62. 6203/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Full Jet Reconstruction I J. Putschke, Talk at RHIC and AGS Users Meeting 2009 Full jet reconstruction questions ZYAM

63. 6303/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Full Jet Reconstruction II No apparent v 2 modulation in jet-hadron vs. di-hadron correlations J. Putschke, Talk at RHIC and AGS Users Meeting 2009

64. 6403/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Full Jet Reconstruction III Jet-hadron away-side significantly narrower J. Putschke, Talk at RHIC and AGS Users Meeting 2009

65. 65 Generic Energy Loss Model 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz n ~ 6: spectral index K =  (1-a) Nuclear modification factor with T AA : Glauber T AA =  2 / P 0 2 : CGC H. Drescher et. al., PRC 76 (2007) 024905

66. 66 Generic Energy Loss Model 03/04/10 Nuclear Theory and RIKEN seminar, BNL Barbara Betz Having fixed , the harmonics can be calculated B. Alver, Talk at the Glasma Workshop, BNL, May 2010 determining the angle with the reaction plane and the Fourier density components are given by