Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-07-06
Phys.Rev.Lett.98:182301,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 3 figures. v3: Significant additions, including a new figure, giving an illustrative example of the effect of the vel
Scientific paper
10.1103/PhysRevLett.98.182301
One of the challenges in relating experimental measurements of the suppression in the number of J/\psi mesons produced in heavy ion collisions to lattice QCD calculations is that whereas the lattice calculations treat J/\psi mesons at rest, in a heavy ion collision a c\bar c pair can have a significant velocity with respect to the hot fluid produced in the collision. The putative J/\psi finds itself in a hot wind. We present the first rigorous non-perturbative calculation of the consequences of a wind velocity v on the screening length L_s for a heavy quark-antiquark pair in hot N=4 supersymmetric QCD. We find L_s(v,T) = f(v)[1-v^2]^{1/4}/\pi T with f(v) only mildly dependent on v and the wind direction. This L_s(v,T)\sim L_s(0,T)/\sqrt{\gamma} velocity scaling, if realized in QCD, provides a significant additional source of J/\Psi suppression at transverse momenta which are high but within experimental reach.
Liu Hong
Rajagopal Krishna
Wiedemann Urs Achim
No associations
LandOfFree
An AdS/CFT Calculation of Screening in a Hot Wind does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An AdS/CFT Calculation of Screening in a Hot Wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An AdS/CFT Calculation of Screening in a Hot Wind will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-44889