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Quark–gluon plasma is an extremely hot and dense state of matter in which the elementary constituents – quarks and gluons – are not confined inside composite particles called hadrons, as they are in t...
Unlike electrons, quarks cannot wander freely in ordinary matter. They are confined by the strong force within hadrons such as the protons and neutrons that make up atomic nuclei. However, at very hig...
Scientists make first detection of exotic “X” particles in quark-gluon plasma（图）
夸克 胶子 等离子体 “X”粒子
2023/6/9
In the first millionths of a second after the Big Bang, the universe was a roiling, trillion-degree plasma of quarks and gluons — elementary particles that briefly glommed together in countless combin...
Using particle accelerators to investigate the quark-gluon plasma of the infant universe
QGP atom neutron
2021/8/10
A new special edition of EPJ Special Topics brings together several papers that detail our understanding of Quark-Gluon Plasma (QGP) and the processes that transformed it into the baryonic matter we a...
'Perfect Liquid' Quark-Gluon Plasma is the Most Vortical Fluid（图）
Perfect Liquid Quark-Gluon Plasma Most Vortical Fluid
2017/9/1
Particle collisions recreating the quark-gluon plasma (QGP) that filled the early universe reveal that droplets of this primordial soup swirl far faster than any other fluid. The new analysis of data ...
Understanding Hard Interaction in QCD and the Search for the Gluon Spin Contribution to the Spin of the Proton
asymmetry hadron proton spin
2014/11/20
In the following discourse unpolarized cross sections and double helicity asymmetries of single inclusive positive and negative charged hadrons at mid-rapidity from p + p collisions at p s = 62:4 GeV ...
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
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
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
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
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
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...
Thermal processes generated in quark-gluon plasma by yoctosecond laser pulses
QGP thermal waves yoctosecond pulses
2011/8/2
Abstract: In this paper the thermal processes generated by yoctosecond (10-24 s) laser pulses in QGP are investigated. Considering that the relaxation time in QGP is of the order of 1 ys it is shown t...
Gluon saturation and energy dependence of hadron multiplicity in pp and AA collisions at the LHC
Gluon saturation energy dependence hadron multiplicity pp AA collisions LHC
2011/4/7
Gluon saturation and energy dependence of hadron multiplicity in pp and AA collisions at the LHC 。
The physics of the initial conditions of heavy ion collisions is dominated by the nonlinear
gluonic interactions of QCD. These lead to the concepts of parton saturation and the Color
Glass Condensat...