Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-09-28
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 4 figures
Scientific paper
We investigate the suppression of $\pi^0$-spectrum in a wide range of $p_\perp$ up 60 GeV/c which is caused by the energy loss of the gluon and quark jets in quark-gluon plasma. The physical characteristics of initial and mixed phases were found in the effective quasiparticle model by analogy with previous work \cite{5}. The PHENIX data up 10 GeV/c within the limits of precision are described by quasiparticle model with decrease of the thermal gluon mass and effective coupling in the region of phase transitin (at $T\to T_c$ from above). We also take into account the intrinsic transverse momentum $k_\perp$ of partons. The suppression factor $R_{AA}(p_\perp)$ shows the weak rise with increase of $p_\perp$ above 4 GeV/c, then it reaches smooth maximum at $p_\perp \sim 20$ GeV/c and then decrease at $p_\perp\sim 60$ GeV/c again to value $R_{AA}$ at $p_\perp\simeq$ 4 GeV/c. The factor $R_{AA}$ in this range of $p_\perp$ is changihg weakly if intrinsic momentum $k_\perp$ is taken into account.
Fokin S. L.
Tarasov Yu. A.
No associations
LandOfFree
Suppression of $π^0$ production at large $p_\perp$ in central $Au +Au$ collisions at $\sqrt{s_{NN}} = 200$ GeV and quark-gluon plasma 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 Suppression of $π^0$ production at large $p_\perp$ in central $Au +Au$ collisions at $\sqrt{s_{NN}} = 200$ GeV and quark-gluon plasma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suppression of $π^0$ production at large $p_\perp$ in central $Au +Au$ collisions at $\sqrt{s_{NN}} = 200$ GeV and quark-gluon plasma will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-238750