Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-01-15
Phys.Rev.C78:034907,2008
Physics
Nuclear Physics
Nuclear Theory
5 pages, 3 figures, two more paragraph added to address the referee's comment, figure updated to include the KET scale. Accept
Scientific paper
10.1103/PhysRevC.78.034907
We present an analysis of $\Omega$, $\Xi$, $\Lambda$ and $\phi$ spectra from Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV in terms of distributions of effective constituent quarks at hadronization. Consistency in quark ratios derived from various hadron spectra provides clear evidence for hadron formation dynamics as suggested by quark coalescence or recombination models. We argue that the constituent quark distribution reflects properties of the effective partonic degrees of freedom at hadronization. Experimental data indicate that strange quarks have a transverse momentum distribution flatter than that of up/down quarks consistent with hydrodynamic expansion in partonic phase prior to hadronization. After the AMPT model is tuned to reproduce the strange and up/down quark distributions, the model can describe the measured spectra of hyperons and $\phi$ mesons very well where hadrons are formed through dynamical coalescence.
Cai Xiang-Zhou
Chen Jacqueline H.
Gangadharan D.
Huang Huan Zhong
Jin Fengping
No associations
LandOfFree
Parton Distributions at Hadronization from Bulk Dense Matter Produced at RHIC 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 Parton Distributions at Hadronization from Bulk Dense Matter Produced at RHIC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parton Distributions at Hadronization from Bulk Dense Matter Produced at RHIC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-150844