Scaling p_T distributions for p and \bar{p} produced in Au+Au collisions at RHIC

Abstract

With the experimental data from STAR and PHENIX on the centrality dependence of the $p_T$ spectra of protons and anti-protons produced at mid-rapidity in Au+Au collisions at 200 GeV, we show that for protons and anti-protons there exists a scaling distribution independent of the colliding centrality. The scaling functions can also describe data from BRAHMS for both proton and anti-proton spectra at $y=2.2$ and 3.2. The scaling behaviors are shown to be incompatible with the usual string fragmentation scenario for particle production.

arXiv comment5 pages in revtex,7 eps figures included, will be appeared in Phys. Rev. C

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Cited by in corpus (9)

• QCD and strongly coupled gauge theories: challenges and perspectives
• An overview of experimental results from ultra-relativistic heavy-ion collisions at the CERN LHC: bulk properties and dynamical evolution
• Scaling behavior of charged hadron $p_T$ distributions in $pp$ and $p\bar{p}$ collisions
• Scaling Behavior of Transverse Kinetic Energy Distributions in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV
• Scaling behaviours of the $p_T$ spectra for identified hadrons in $pp$ collisions
• Universal scaling of strange particle $p_{\mathrm{T}}$ spectra in pp collisions
• Universal scaling of the pion, kaon and proton $p_{\mathrm{T}}$ spectra in Pb-Pb collisions at 2.76 TeV
• Universal scaling of meson and baryon spectra in p-Pb collisions at 5.02 TeV
• Universality of scaled particle spectra in ultrarelativistic heavy-ion collisions