Higher Moments of the Net-charge Multiplicity Distributions at RHIC Energies in STAR
نویسندگان
چکیده
منابع مشابه
Higher moments of net proton multiplicity distributions at RHIC.
We report the first measurements of the kurtosis (κ), skewness (S), and variance (σ2) of net-proton multiplicity (Np-Np) distributions at midrapidity for Au+Au collisions at square root of s(NN)=19.6, 62.4, and 200 GeV corresponding to baryon chemical potentials (μB) between 200 and 20 MeV. Our measurements of the products κσ2 and Sσ, which can be related to theoretical calculations sensitive t...
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We report the first measurements of the moments--mean (M), variance (σ(2)), skewness (S), and kurtosis (κ)--of the net-charge multiplicity distributions at midrapidity in Au+Au collisions at seven energies, ranging from sqrt[sNN]=7.7 to 200 GeV, as a part of the Beam Energy Scan program at RHIC. The moments are related to the thermodynamic susceptibilities of net charge, and are sensitive to th...
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We report the beam energy (sqrt[sNN]=7.7-200 GeV) and collision centrality dependence of the mean (M), standard deviation (σ), skewness (S), and kurtosis (κ) of the net-proton multiplicity distributions in Au+Au collisions. The measurements are carried out by the STAR experiment at midrapidity (|y|<0.5) and within the transverse momentum range 0.4<pT<0.8 GeV/c in the first phase of the Beam E...
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It is shown that QCD is able to predict very tiny features of multiplicity distributions at very high energies which demonstrate that the negative binomial distribution (and, more generally speaking, any infinitely divisible distribution) is inappropriate for precise description of experimental data. New precise fits of high energy multiplicity distributions can be derived. In this report, I br...
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Strangeness measurement at RHIC energies constitutes one of the favorite theme of the STAR Collaboration. Besides the fact that strangeness enhancement has been proposed as a quark gluon plasma signature, its production provides various and relevant information about the collision evolution and especially on the hadronization process. The investigation of short-lived strange particles as well a...
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ژورنال
عنوان ژورنال: Acta Physica Polonica B Proceedings Supplement
سال: 2013
ISSN: 1899-2358,2082-7865
DOI: 10.5506/aphyspolbsupp.6.437