Pion freeze-out as seen through HBT correlations in heavy ion collisions from FAIR/AGS to RHIC energies

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dc.creatorLi, Qingfeng
dc.creatorBleicher, Marcus
dc.creatorStoecker, Horst
dc.date2007-06-14
dc.date2007-07-06
dc.date.accessioned2026-07-07T11:16:51Z
dc.date.available2026-07-07T11:16:51Z
dc.descriptionWe perform a systematic analysis of several HBT parameters in heavy ion collisions from $E_{\rm beam}=2$ AGeV to $\sqrt {s_{\rm NN}}=200$ GeV within the UrQMD transport approach and compare the results to experimental data where available. We find that the 'lifetime' of the emission source as calculated from $τ\sim \sqrt{R_O^{2}-R_S^{2}}$, is larger than the experimentally observed values at all investigated energies. The calculated volume of the pion source ($V_f$) is found to increase monotonously with increasing beam energy and the experimentally observed decrease of the measured $V_f$ at AGS is not seen. Finally, we calculate the mean free path $λ_f=0.5-1$ fm of pions at freeze-out and find a good description of the experimental data above the AGS energy region, supporting the suggestion of a universal kinetic decoupling criterion up to the highest RHIC energies.
dc.description11 pages, 2 figs
dc.identifierhttps://arxiv.org/abs/0706.2091
dc.identifierhttp://arxiv.org/abs/0706.2091
dc.identifierJ.Phys.G34:2037-2044,2007
dc.identifierdoi:10.1088/0954-3899/34/9/012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192815
dc.subjectNuclear Theory
dc.titlePion freeze-out as seen through HBT correlations in heavy ion collisions from FAIR/AGS to RHIC energies
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