Observables and initial conditions for self-similar ellipsoidal flows

Csörgő, T.; Akkelin, S. V.; Hama, Yogiro; Lukács, B.; Sinyukov, Yu. M.

doi:10.1103/physrevc.67.034904

Cited by 59 publications

(146 citation statements)

References 24 publications

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“…(For the more general case, see References [44,47,48,49,50].) Thus, we are left with four HBT radii, which are related to space-time variances as [6,44] …”

Section: Hbt Radii Versus Pt and φPmentioning

confidence: 99%

Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions

2004

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Using an analytical parameterization of hadronic freeze-out in relativistic heavy ion collisions, we present a detailed study of the connections between features of the freeze-out configuration and physical observables. We focus especially on anisotropic freeze-out configurations (expected in general for collisions at finite impact parameter), azimuthally-sensitive HBT interferometry, and final-state interactions between non-identical particles. Model calculations are compared with data taken in the first year of running at RHIC; while not perfect, good agreement is found, raising the hope that a consistent understanding of the full freeze-out scenario at RHIC is possible, an important first step towards understanding the physics of the system prior to freeze-out.

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“…(For the more general case, see References [44,47,48,49,50].) Thus, we are left with four HBT radii, which are related to space-time variances as [6,44] …”

Section: Hbt Radii Versus Pt and φPmentioning

confidence: 99%

Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions

2004

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“…Also note that there is a mean multiplicity dependence of the transverse momentum spectra in p + p collisions [49], that is not discussed in the present paper. We use a radial flow picture [68,69] with the fitting function:…”

Section: A Radial Flowmentioning

confidence: 99%

Identified charged hadron production inp+pcollisions ats=200and 62.4 GeV

Adare¹,

Afanasiev²,

Aidala³

et al. 2011

Phys. Rev. C

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191

100

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Transverse momentum distributions and yields for π ± , K ± , p and p in p + p collisions at √ s = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope parameter Tinv, mean transverse momentum pT and yield per unit rapidity dN/dy at each energy, and compare them to other measurements at different √ s in p + p and p + p collisions. We also present the scaling properties such as mT scaling, xT scaling on the pT spectra between different energies. To discuss the mechanism of the particle production in p + p collisions, the measured spectra are compared to nextto-leading-order or next-to-leading-logarithmic perturbative quantum chromodynamics calculations.

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“…This is the frame corresponding to the System of Ellipsoidal Expansion (SEE), introduced in ref. [ 6], where the relationship between the observables in SEE and in the CMS of the fireball were analyzed in great details.…”

mentioning

confidence: 99%

Inflation of Fireballs, the Gluon Wind and the Homogeneity of the HBT Radii at RHIC

Csörgő

Zimànýi

2003

Acta Physica Hungarica A) Heavy Ion Physics

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Abstract. We solve analytically the ellipsoidally expanding fireball hydrodynamics with source terms in the momentum and energy equations, using the non-relativistic approximation. We find that energy transport from high p t jets of gluons to the medium leads to a transient, exponential inflation of the fireballs created in high energy heavy ion collisions. In this transient, inflatory period, the slopes of the single particle spectra are exponentially increasing, while the HBT radius parameters are exponentially decreasing with time. This effect is shown to be similar to the development of the homogeneity of our Universe due to an inflatory period. Independently of the initial conditions, and the exact value of freeze-out time and temperature, the measurables (single particle spectra, the correlation functions, slope parameters, elliptic flow, HBT radii and cross terms) become time-independent during the late, non-inflatory stages of the expansion, and they satisfy new kind of scaling laws. If the expansion starts with a transient inflation caused by the gluon wind, it leads naturally to large transverse flows as well as to the the simultaneous equality, and scaling behaviour of the HBT radius parameters, R side ≈ R out ≈ R long ≈ t f T f /m. With certain relativistic corrections, the scaling limit is τ f T f /m t , where m t is the mean transverse mass of the pair.

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Observables and initial conditions for self-similar ellipsoidal flows

Cited by 59 publications

References 24 publications

Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions

Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions

Identified charged hadron production inp+pcollisions ats=200and 62.4 GeV

Inflation of Fireballs, the Gluon Wind and the Homogeneity of the HBT Radii at RHIC

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