Quarkonia Measurement Updates from PHENIX

1. Quarkonia Measurement Updatesfrom PHENIX Cesar Luiz da Silva Los Alamos National Lab for the PHENIX Collaboration

2. Melting temperature arXiv:1404.2246 from direct photon yield C. L. da Silva - Quark Matter 2014, Darmstadt Germany

3. Multiple interactions Competing effects on Quarkonia RAA Melting temperature arXiv:1404.2246 Coalescence, Regeneration c Radiation, recombinations c c c Parton energy loss from direct photon yield Gluon saturation Need several measurements to isolate different effects. C. L. da Silva - Quark Matter 2014, Darmstadt Germany

4. C. L. da Silva - Quark Matter 2014, Darmstadt Germany

5. RHIC Ions – 6 species and 15 energies to date 197Au79+197Au79 7, 9, 11, 15, 20, 27, 39, 62, 130, 200.0GeV/nucleon d+197Au79 200GeV/nucleon 63Cu29+63Cu29 22, 62, 200GeV/nucleon p↑+p↑ 62, 200, 500, 510 GeV/nucleon 63Cu29+197Au79 200GeV/nucleon 238U92+238U92 193GeV/nucleon Can collide any species combination from proton(polarized) to uranium. C. L. da Silva - Quark Matter 2014, Darmstadt Germany

6. System Geometry Study with J/ψ->μ+μ- 1.2<|y|<2.2 preliminary U U arXiv:1404.1873 Au Cu |y|<0.35 Higher mass quarkonia with ϒ->e+e- arXiv:1404.2246 Au Au C. L. da Silva - Quark Matter 2014, Darmstadt Germany

7. System Geometry Study with J/ψ->μ+μ- 1.2<|y|<2.2 U U • Differences from Au+Au collisions • Maximum number of nucleons participants 15% larger than Au+Au • larger energy density • parton modification function

8. System Size Study C. L. da Silva - Quark Matter 2014, Darmstadt Germany

9. Asymmetric Collisions Cu+Au -2.2<y<-1.2 1.2<y<2.2 C. L. da Silva - Quark Matter 2014, Darmstadt Germany

10. Cu+Au -2.2<y<-1.2 1.2<y<2.2 C. L. da Silva - Quark Matter 2014, Darmstadt Germany

11. Is RAA also Asymmetric ? arXiv:1404.1873 Au-going Cu-going C. L. da Silva - Quark Matter 2014, Darmstadt Germany

12. Is RAA also Asymmetric ? arXiv:1404.1873 C. L. da Silva - Quark Matter 2014, Darmstadt Germany

13. Is RAA also Asymmetric ? arXiv:1404.1873 CNM = EPS09 + 4mb breakup • Cu-going probes small-x in Au • Au-going probes small-x in Cu • initial state effects cause R to decreasewith centrality • Final state effects causes more suppression in Au-going side •  Final state effects should increase R with centrality R = Cu-going RAA / Au-going RAA Awaiting for a full model calculation including different CNM and QGP sources. C. L. da Silva - Quark Matter 2014, Darmstadt Germany

14. More U+U and Cu+Au studies are coming up: • pT and azimuthal dependence of J/ψ yields • Open heavy flavor arXiv:1404.1873 Cu-going RAA / Au-going RAA CNM = EPS09 -> Glauber C. L. da Silva - Quark Matter 2014, Darmstadt Germany

15. Bottomonia • Extend the QGP thermometer. • Number of heavy flavor pairs formed in a central Au+Au collision • at RHIC: b b c c c c Coalescence is disfavored for ϒ familyat RHIC. b b Regeneration could be the same as charmonium. b b b b C. L. da Silva - Quark Matter 2014, Darmstadt Germany

16. ϒ(1S+2S+3S) Measurements p+p arXiv:1404.2246 Au+Au • clear 1S+2S+3S peaks observed in p+p and Au+Au events • well know background and corresponding systematics, thanks to the broad di-electron mass range coverage C. L. da Silva - Quark Matter 2014, Darmstadt Germany

17. ϒ(1S+2S+3S) in p+p 200GeV arXiv:1404.2246 R.Vogt, PRC87,014908 (2013) PHENIX measure rapidity dependent ϒcross section. C. L. da Silva - Quark Matter 2014, Darmstadt Germany

18. ϒ(1S+2S+3S) Npart dependence C. L. da Silva - Quark Matter 2014, Darmstadt Germany

19. ϒ(1S+2S+3S) RAA C. L. da Silva - Quark Matter 2014, Darmstadt Germany

20. Comparison with CMS result C. L. da Silva - Quark Matter 2014, Darmstadt Germany

21. ϒ(1S+2S+3S) RAA What would be the maximum RAA (zero CNM effect) if ϒexcited states are completely suppressed ? Complete suppression of 2S and 3S Complete suppression of 2S,3S and χB C. L. da Silva - Quark Matter 2014, Darmstadt Germany

22. Comparison with Models M. Strickland and D. Bazow, Nucl.Phys. A879, 25(2012) A. Emerick, X. Zhao, and R. Rapp, Eur.Phys.J. A48, 72(2012) Potential B=potential A + entropy contribution to the free energy C. L. da Silva - Quark Matter 2014, Darmstadt Germany

23. Comparison with Models • Needs more statistics for a conclusive result • High-statistics 2014 run (> x2 increase in statistics in half of the run) • 50 billion Au+Au events and full azimuthal coverage in sPHENIX M. Strickland and D. Bazow, Nucl.Phys. A879, 25(2012) A. Emerick, X. Zhao, and R. Rapp, Eur.Phys.J. A48, 72(2012) Potential B=potential A + entropy contribution to the free energy C. L. da Silva - Quark Matter 2014, Darmstadt Germany

24. Summary • System Size Study • J/ψ RAA is consistent between different colliding systems • differences are in the level of ~20%, despite expected variations in the CNM and QGP effects • results can help to weight the different sources of J/ψ suppression • ϒ(1S+2S+3S) Measurement • first ϒ family result from PHENIX, where coalescence may not happen • result shows consistency with CMS result and models that include suppression of excited states • more precise data is needed to confirm the observation and favor scenarios C. L. da Silva - Quark Matter 2014, Darmstadt Germany

25. BACKUP SLIDES C. L. da Silva - Quark Matter 2014, Darmstadt Germany

26. QGP Thermometer arXiv:1404.2246 27 references • Studies adopted different • calculation techniques • Tc • Use of internal energy or free energy for the system • Definition of dissociation point from direct photon yield Large effort from theoretical side to calibrate the thermometer Overall, ground states J/ψ and ϒ(1S) are not suppressed at RHIC. C. L. da Silva - Quark Matter 2014, Darmstadt Germany

27. Asymmetric Collisions Cu+Au spectator density -2.2<y<-1.2 1.2<y<2.2 C. L. da Silva - Quark Matter 2014, Darmstadt Germany

28. Comparison with J/ψ J/ψ |y|<0.35 10% global C. L. da Silva - Quark Matter 2014, Darmstadt Germany