搜索结果: 1-14 共查到“原子核物理学 Gluon”相关记录14条 . 查询时间(0.031 秒)
To what extent is Gluon Confinement an empirical fact?
Gluon Confinement
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2011/7/21
Experimental verifications of Confinement in hadron physics have established the absence of charges with a fraction of the electron's charge by studying the energy deposited in ionization tracks at hi...
Experimental equation of state in proton-proton and proton-antiproton collisions and phase transition to quark gluon plasma
quark gluon plasma average transverse momentum vs pseudorapidity density
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2011/7/21
We deduce approximate equations of state from experimental measurements in proton-proton and proton-antiproton collisions.
Study of $ππ$ correlations at LHC and RHIC energies in $pp$ collisions within the quark-gluon string model
quark-gluon string model RHIC energies
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2011/7/21
The Quark Gluon String Model (QGSM) reproduces well the global characteristics of the $pp$ collisions at RHIC and LHC, e.g., the pseudorapidity and transverse momenta distributions at different centra...
Heavy-Quark Diffusion and Hadronization in Quark-Gluon Plasma
Heavy Quark Diffusion Quark Gluon Plasma Quark Recombination
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2011/7/20
We calculate diffusion and hadronization of heavy quarks in high-energy heavy-ion collisions implementing the notion of a strongly coupled quark-gluon plasma in both micro- and macroscopic components....
Relaxation time ansatz and shear and bulk viscosities of gluon matter
Relaxation time ansatz shear bulk viscosities
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2011/7/20
Shear and bulk viscosity-to-entropy density ratios are calculated for the pure gluon matter in a non-equilibrium mean-field quasiparticle approach within the relaxation time approximation. We study ho...
Momentum dependence of drag coefficients and heavy flavour suppression in quark gluon plasma
Momentum dependence heavy flavour suppression
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2011/7/20
The momentum dependence of the drag coefficient of heavy quarks propagating through quark gluon plasma (QGP) has been evaluated. The results have been used to estimate the nuclear suppression factor o...
Gluon shadowing and hadron production in heavy-ion collisions at LHC
Gluon shadowing hadron production heavy-ion collisions LHC
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2010/12/29
The recently published first measurement of charged hadron multiplicity density at mid-rapidity $dN_{ch}/d\eta=1584 \pm 4 ({\rm stat.}) \pm 76 ({\rm sys.})$ in central $Pb+Pb$ collisions at $\sqrt{s} ...
How Perfect a Gluon Plasma Can Be in Perturbative QCD?
Gluon Plasma Can Be Perturbative QCD
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2011/1/10
The shear viscosity to entropy density ratio, /s, characterizes how perfect a fluid is. We calculate the leading order /s of a gluon plasma in perturbation using the kinetic theory. The leading orde...
Leading-Order Determination of the Gluon Polarization from high-$p_T$ Hadron Electroproduction
Lepton-Nucleon Scattering Deep Inelastic Scattering QCD gluon polarization
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2010/3/15
Longitudinal double-spin asymmetries of charged hadrons with high transverse momentum $p_T$ have been measured in electroproduction using the \hermes\ detector at \hera. Processes involving gluons in ...
Finite-Size Constraints on Nucleation of Hadrons in a Quark-Gluon Plasma
Finite-Size Constraints Nucleation of Hadrons a Quark-Gluon Plasma
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2010/10/19
We discuss finite-size effects on homogeneous nucleation in first-order phase transitions. We study their implications for cosmological phase transitions and to the hadronization of a quark-gluon plas...
Spinodal Instability in the Quark-Gluon Plasma
Spinodal Instability the Quark-Gluon Plasma
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2010/10/19
We investigate the onset of spinodal decomposition in a relativistic fluid of quarks coupled to a nonequilibrium chiral condensate. Studying small fluctuations around equilibrium, we identify the role...
Hunt for the Quark-Gluon Plasma: 20 Years Later
the Quark-Gluon Plasma CERN SPS BNL RHIC
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2010/10/19
We review briefly the recent progress in the search for the quark-gluon plasma (QGP) at CERN SPS and BNL RHIC. Several model analyses and observables, such as hadronic thermal equilibrium, hydrodynami...
Mean Multiplicity of Quark and Gluon Jets as a Function of Opening Angle in e+e- \rightarrow b\overline{b} g Events
Jets Quarks Gluon Jet energy
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2010/4/12
A comparison of the properties of quark and gluon jets has been madeby Monte Carlo simulation of the reaction Z \rightarrow b \overline{b} g. The jet energy is held fixed for every 5 GeV between 15--3...
A Method for Identifying Gluon Jets with High Purity in 3-jet Hadronic Z Decays
Three-Jet Gluon purity B-tag Z Boson
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2010/4/13
A method for identifying gluon jets with very high purity is presented and the performance evaluated. Quark and gluon jets from Monte Carlo simulated Hadronic Z decays are identified by energy ordered...