Transverse Momentum Dependence of Hanbury-Brown/Twiss Correlation Radii

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dc.creatorWiedemann, Urs Achim
dc.creatorScotto, Pierre
dc.creatorHeinz, Ulrich
dc.date1995-08-24
dc.date.accessioned2026-07-07T11:15:27Z
dc.date.available2026-07-07T11:15:27Z
dc.descriptionThe transverse momentum dependence of Hanbury-Brown/Twiss (HBT) interferometry radii for 2-body correlation functions provides experimental access to the collective dynamics in heavy-ion collisions. We present an analytical approximation scheme for these HBT radii which combines the recently derived model-independent expressions with an approximate determination of the saddle point of the emission function. The method is illustrated for a longitudinally boost-invariant hydrodynamical model of a heavy ion collision with freeze-out on a sharp hypersurface. The analytical approximation converges rapidly to the width of the numerically computed correlation function and reproduces correctly its exact transverse momentum dependence. However, higher order corrections within our approximation scheme are essential, and the previously published lowest order results with simple $m_{\perp}$ scaling behaviour are quantitatively and qualitatively unreliable.
dc.description34 pages, 3 Postscript figures, RevTeX
dc.identifierhttps://arxiv.org/abs/nucl-th/9508040
dc.identifierhttp://arxiv.org/abs/nucl-th/9508040
dc.identifierPhys.Rev.C53:918-931,1996
dc.identifierdoi:10.1103/PhysRevC.53.918
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192391
dc.subjectNuclear Theory
dc.titleTransverse Momentum Dependence of Hanbury-Brown/Twiss Correlation Radii
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