1 / 26

Single & Dihadron Suppression at RHIC and LHC

Last call for prediction for LHC, CERN, May 29-June 2,2007. Single & Dihadron Suppression at RHIC and LHC. Xin-Nian Wang Lawrence Berkeley National Laboratory. Collaborators: J. Owens, E. Wang, Z. Zhang, Phys. Rev. Lett. 98, 21230 (2007) [nucl-th/0701045]. Outline.

zihna
Télécharger la présentation

Single & Dihadron Suppression at RHIC and LHC

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. Last call for prediction for LHC, CERN, May 29-June 2,2007 Single & Dihadron Suppression at RHIC and LHC Xin-Nian Wang Lawrence Berkeley National Laboratory Collaborators: J. Owens, E. Wang, Z. Zhang, Phys. Rev. Lett. 98, 21230 (2007) [nucl-th/0701045]

  2. Outline • Jet quenching in twist expansion framework • Single and dihadron suppression at RHIC and LHC • A roadmap for jet study at LHC

  3. Jet Quenching in A+A Collisions leading particle hadrons q q hadrons leading particle Leading particle suppressed hadrons q q hadrons N-N collision A-A collision leading particle suppressed

  4. Alphabets of jet quenching • Gyulassy-Levai-Vitev (GLV) • (Djordjevic, Wicks, Horowitz, …) • Armesto-Salgado-Wiedeman (ASW) • (Dainess et al, Arleo, Renk, Eskola, …) • Arnold-Moore-Yaffe (AMY) • High-Twist Expansion (THE)(XNW, Guo, Majumder, Osborne, Owens, E. Wang, B. Zhang, H. Zhang,…) Comparative study of jet quenching schemes; A. Majumder QM06 (nucl-th/0702066 )

  5. Jet Quenching in High-Twist Expansion

  6. Gluon distribution of the medium

  7. pT broadening and gluon distribution k=E q p

  8. Elastic Energy Loss +…. + +

  9. Elastic vs. Radiative Energy Loss For E=10 GeV, T=0.2 GeV, L=6 fm, as=0.3

  10. Quark-quark Scattering arXiv:0704.0106 [hep-ph] Schafer, XNW and B.Zhang, Gluon –parton scattering Coupled equation for modified fragmentation functions for Quarks and gluons

  11. NLO pQCD Calculation 1-D expanding Transport coefficient Energy loss parameter Geometry: Hard Sphere: Good approximation to Wood-Saxon

  12. Single and Dihadron hadron suppression at RHIC zT=pTass/pTtrig

  13. Sensitivity to initial density

  14. Surface emission?

  15. Surface vs. Volume

  16. Multiplicity at LHC 2dN/dh/Npart=10-12

  17. Parton Shadowing at LHC

  18. Single hadron suppression at LHC

  19. Dihadron suppression at LHC

  20. Dihadron suppression at LHC

  21. A roadmap for jet study at LHC Re-constructed jets open up a whole new world for jet quenching study (I always believe what my experimental colleagues tell me) • Reconstructed jets: • Single inclusive jets • Di-jets • Gamma-jets

  22. (1) Measurements of jet shape 1 Jet cone size R • RAA(ET) for jets: RAA For single hadrons

  23. (2) Direct measurement of qhat g J. Casalderrey-Solana and XNW, arXiv:0705.1352 [hep-ph]. Majumder, Muller and XNW, arXiv:hep-ph/0703082

  24. q-hat in a nucleus e- E. Wang & XNW PRL 89, 162301(2002)

  25. (3) Modified fragmentation functions XNW, Huang and Sarcevic, Phys.Rev. Lett. 77, 231 (1996)

  26. Utopia?

More Related