منابع مشابه
Charmed Hadron Production at RHIC†
To extract information about polarized gluon distribution in the proton, charmed hadron, actually Λc , productions at RHIC experiment are studied. We found that the spin correlation asymmetry between the initial proton and the produced Λc is enable us to distinguish parameterization models of polarized gluons. † Talk presented by K. OHKUMA at 3rd Circum-Pan-Pacific Symposium on “High Energy Spi...
متن کاملHadron Production at Intermediate pT at RHIC
Large proton and antiproton enhancement with respect to pions has been observed at intermediate transverse momentum pT ≈ 2-5 GeV/c in Au+Au collisions at RHIC. To investigate the possible source of this anomaly, the production of φ mesons and two particle angular correlations triggered by mid-pT baryons or mesons are studied. We also present the first measurement of proton and antiproton produc...
متن کاملEvidence for Color Transparency and Direct Hadron Production at RHIC
The QCD color transparency of higher-twist contributions to the inclusive hadroproduction cross section, where the trigger proton is produced directly in a short-distance subprocess, can explain several remarkable features of high-pT proton production in heavy ion collisions which have recently been observed at RHIC: (a) the anomalous increase of the p → π ratio with centrality (b): the more ra...
متن کاملHadron production in Au–Au collisions at RHIC
We present an analysis of particle production yields measured in central Au–Au collisions at RHIC in the framework of the statistical thermal model. We demonstrate that the model extrapolated from previous analyses at SPS and AGS energy is in good agreement with the available experimental data at √ s = 130 GeV implying a high degree of chemical equilibration. Performing a χ2 fit to the data, th...
متن کاملParticle Production at RHIC
Identified hadron spectra and ratios provide a unique tool to study the bulk particle production in heavy-ion collisions and explore the QCD phase diagram. In these proceedings we present the analysis of charged pion, kaon and (anti)proton distributions from √ s NN = 200 and 62.4 GeV Cu+Cu collisions, collected by the STAR experiment. New measurements extend the systematic studies of bulk prope...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2005
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/31/4/048