New results from the PHOBOS experiment

Roland, G.

doi:10.1016/j.nuclphysa.2006.06.034

Cited by 33 publications

(23 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A demonstration of this independence hypothesis has been given for Au+Au and Cu+Cu collisions by the PHOBOS collaboration [8].…”

Section: Thermalization and Harmonic Flow Correlationsmentioning

confidence: 92%

What do elliptic flow measurements tell us about the matter created in the little bang at RHIC?

Lacey¹,

Taranenko²

2007

Proceedings of Correlations and Fluctuations in Relativistic Nuclear Collisions — PoS(CFRNC2006)

View full text Add to dashboard Cite

Elliptic flow measurements are presented and discussed with emphasis on the hydrodynamic character of the hot and dense QCD matter created in heavy ion collisions at RHIC. Predictions from perfect fluid hydrodynamics for the scaling of the elliptic flow coefficient v 2 with eccentricity, system size and transverse energy are validated. A universal scaling for the flow of both mesons and baryons is observed for a broad transverse kinetic energy range when quark number scaling is employed. This suggests a new state of nuclear matter at extremely high density and temperature whose primary constituents have the quantum numbers of quarks and anti-quarks in chemical equilibrium. The scaled flow is used to constrain estimates for several transport coefficients including the sound speed c s , shear viscosity to entropy ratio η/s, diffusion coefficient (D c ) and sound attenuation length (Γ). The estimated value η/s ∼ 0.1, is close to the absolute lower bound (1/4π), and may signal thermodynamic trajectories for the decaying matter which lie close to the QCD critical end point.

show abstract

“…A demonstration of this independence hypothesis has been given for Au+Au and Cu+Cu collisions by the PHOBOS collaboration [8].…”

Section: Thermalization and Harmonic Flow Correlationsmentioning

confidence: 92%

What do elliptic flow measurements tell us about the matter created in the little bang at RHIC?

Lacey¹,

Taranenko²

2007

Proceedings of Correlations and Fluctuations in Relativistic Nuclear Collisions — PoS(CFRNC2006)

View full text Add to dashboard Cite

show abstract

“…This is also chosen if the joint rapidity distribution of several unresolved particle species is considered: notably the charged hadron distribution. at different centralities [42]. Closed lines represent fits with the color glass condensate model [43].…”

Section: Rapidity Distributionsmentioning

confidence: 99%

Global Properties of Nucleus–Nucleus Collisions

Kliemant

Sahoo

Schuster

et al. 2009

The Physics of the Quark-Gluon Plasma

View full text Add to dashboard Cite

“…The very first data from RHIC (for an overview of the data from the initial stage of RHIC experiments see [1][2][3][4]) showed that the measured charged hadron multiplicities in Au − Au collisions appeared much smaller than expected on the basis of incoherent superposition of hard processes. Fig.…”

Section: Quantum Chromo-dynamics Of Strong Color Fieldsmentioning

confidence: 99%

Hot and dense matter: from RHIC to LHC – Theoretical overview

Kharzeev

2009

Nuclear Physics A

View full text Add to dashboard Cite

Relativistic heavy ion physics studies the phenomena that occur when a very large amount of energy (in units of QCD scale ΛQCD) is deposited into a large volume (in units of Λ −3 QCD ), creating an extended in space and time domain with an energy density that is large in units of Λ 4 QCD . This includes the mechanism by which the energy is deposited (likely a transformation of the colliding Lorentz-contracted "gluon walls" into the strong longitudinal color fields); approach to thermalization; and the static and dynamical properties of the created quark-gluon plasma. Of particular interest is the fate of symmetries (e.g. chiral SUL(3) × SUR(3), scale, and discrete P and CP invariances) in hot and dense QCD matter. At present, the program at RHIC has entered a stage where new discoveries are enabled by high precision of the measurements; moreover, an array of new capabilities will soon be available due to the numerous and significant upgrades. Very importantly, we will soon have access to unprecedented energies of colliding ions at the LHC. In addition, future RHIC runs at low energies, FAIR at GSI and NICA at JINR will make possible the studies of QCD matter at high baryon density. I will describe the current status of theoretical knowledge about hot QCD, and the ways in which it may be expected to improve in the near future.

show abstract

New results from the PHOBOS experiment

Cited by 33 publications

References 26 publications

What do elliptic flow measurements tell us about the matter created in the little bang at RHIC?

What do elliptic flow measurements tell us about the matter created in the little bang at RHIC?

Global Properties of Nucleus–Nucleus Collisions

Hot and dense matter: from RHIC to LHC – Theoretical overview

Contact Info

Product

Resources

About