eprintid: 2474
rev_number: 8
eprint_status: archive
userid: 1
dir: disk0/00/00/24/74
datestamp: 2002-07-23 00:00:00
lastmod: 2014-04-03 12:01:23
status_changed: 2012-08-14 15:04:56
type: doctoralThesis
metadata_visibility: show
creators_name: Tilsner, Heinz
title: Two-Particle Correlations at 40, 80, and 158 AGeV Pb-Au Collisions
title_de: Zwei-Teilchen-Korrelationen bei 40, 80 und 158 AGeV Pb-Au Kollisionen
ispublished: pub
subjects: ddc-530
divisions: i-130200
adv_faculty: af-13
keywords: HBT , Pion-Korrelationenpion correlations
cterms_swd: xxx
abstract_translated_text: In this thesis, a centrality dependent study of tow-particle momentum correlations of like-sign pions (HBT interferometry) from Pb-Au collisions  at beam energies of 40, 80 and 158 AGeV is presented. The three-dimensional correlation function C_2, depending on the relative momentum components of the particle pair, was parameterized using a three-dimensional Gaussian, modified to consider the final state Coulomb repulsion. The parameterization was done in the Cartesian out-side-long system as proposed by G. Bertsch and S. Pratt. A differential analysis of the HBT radius parameters as a function of the mean transverse pair momentum k_perp allowed to determine transverse geometrical source sizes of about 5.5 fm to 7 fm, increasing with energy and centrality. The mean transverse flow velocity v_perp was found to be of the order 0.5--0.6 c. For the freeze-out time tau_f values between 6 and 8 fm/c were obtained with a duration of particle emission compatible with zero. The beam energy dependence of the HBT radii provide evidence for a universal pion freeze-out condition. The analyzed data have been recorded with the CERES spectrometer at the Super  Proton Synchrotron (SPS) accelerator at CERN.
abstract_translated_lang: eng
class_scheme: pacs
date: 2002
date_type: published
id_scheme: DOI
id_number: 10.11588/heidok.00002474
ppn_swb: 1643331582
own_urn: urn:nbn:de:bsz:16-opus-24749
date_accepted: 2002-06-12
advisor: HASH(0x558eaa74ad60)
language: eng
bibsort: TILSNERHEITWOPARTICL2002
full_text_status: public
citation:   Tilsner, Heinz  (2002) Two-Particle Correlations at 40, 80, and 158 AGeV Pb-Au Collisions.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/2474/1/thesis.pdf