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Title: Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon

Abstract

Two-particle correlation functions of negative hadrons over wide phase space, and transverse mass spectra of negative hadrons and deuterons near mid-rapidity have been measured in central Pb+Pb collisions at 158 GeV per nucleon by the NA49 experiment at the CERN SPS. A novel Coulomb correction procedure for the negative two-particle correlations is employed making use of the measured oppositely charged particle correlation. Within an expanding source scenario these results are used to extract the dynamic characteristics of the hadronic source, resolving the ambiguities between the temperature and transverse expansion velocity of the source, that are unavoidable when single and two particle spectra are analysed separately. Lastly, the source shape, the total duration of the source expansion, the duration of particle emission, the freeze-out temperature and the longitudinal and transverse expansion velocities are deduced.

Authors:
 [1]
  1. Gesellschaft fur Schwerionenforschung (GSI), Darmstadt (Germany). et al.
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
NA49 Collaboration
OSTI Identifier:
1407015
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 2; Journal Issue: 4; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Appelshäuser, H. Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon. United States: N. p., 1998. Web. doi:10.1007/s100529800866.
Appelshäuser, H. Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon. United States. doi:10.1007/s100529800866.
Appelshäuser, H. Tue . "Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon". United States. doi:10.1007/s100529800866. https://www.osti.gov/servlets/purl/1407015.
@article{osti_1407015,
title = {Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon},
author = {Appelshäuser, H.},
abstractNote = {Two-particle correlation functions of negative hadrons over wide phase space, and transverse mass spectra of negative hadrons and deuterons near mid-rapidity have been measured in central Pb+Pb collisions at 158 GeV per nucleon by the NA49 experiment at the CERN SPS. A novel Coulomb correction procedure for the negative two-particle correlations is employed making use of the measured oppositely charged particle correlation. Within an expanding source scenario these results are used to extract the dynamic characteristics of the hadronic source, resolving the ambiguities between the temperature and transverse expansion velocity of the source, that are unavoidable when single and two particle spectra are analysed separately. Lastly, the source shape, the total duration of the source expansion, the duration of particle emission, the freeze-out temperature and the longitudinal and transverse expansion velocities are deduced.},
doi = {10.1007/s100529800866},
journal = {European Physical Journal. C, Particles and Fields},
number = 4,
volume = 2,
place = {United States},
year = {1998},
month = {3}
}

Journal Article:
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