Sangam: A Confluence of Knowledge Streams

Phase-space dependence of particle-ratio fluctuations in Pb + Pb collisions from 20A to 158A GeV beam energy

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dc.contributor Massachusetts Institute of Technology. Department of Physics
dc.contributor Massachusetts Institute of Technology. Laboratory for Nuclear Science
dc.contributor Roland, Christof E.
dc.contributor Roland, Gunther M.
dc.creator RolandG, unther M.
dc.creator Roland, Christof E
dc.creator Roland, Gunther M
dc.date 2014-08-19T19:54:46Z
dc.date 2014-08-19T19:54:46Z
dc.date 2014-05
dc.date 2013-10
dc.date.accessioned 2023-03-01T18:05:17Z
dc.date.available 2023-03-01T18:05:17Z
dc.identifier 0556-2813
dc.identifier 1089-490X
dc.identifier http://hdl.handle.net/1721.1/88921
dc.identifier Anticic, T., B. Baatar, J. Bartke, H. Beck, L. Betev, H. Białkowska, C. Blume, et al. “Phase-space dependence of particle-ratio fluctuations in Pb + Pb collisions from 20A to 158A GeV beam energy.” Phys. Rev. C 89, no. 5 (May 2014). © 2014 American Physical Society
dc.identifier https://orcid.org/0000-0001-8983-2169
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278698
dc.description A novel approach, the identity method, was used for particle identification and the study of fluctuations of particle yield ratios in Pb + Pb collisions at the CERN Super Proton Synchrotron (SPS). This procedure allows one to measure the moments of the multiplicity distributions of protons (p), kaons (K), pions (π), and electrons (e) in case of incomplete particle identification. Using these moments the excitation function of the fluctuation measure ν[subscript dyn] [A,B] was measured, with A and B denoting different particle types. The obtained energy dependence of ν[subscript dyn] agrees with previously published NA49 results on the related measure σdyn. However, ν[subscript dyn] [K,p] and ν[subscript dyn] [K,π] were found to depend on the phase-space coverage. This feature most likely explains the reported differences between measurements of NA49 and those of STAR in central Au + Au collisions.
dc.description United States. Dept. of Energy (Grant DE-FG03-97ER41020/A000)
dc.format application/pdf
dc.language en_US
dc.publisher American Physical Society
dc.relation http://dx.doi.org/10.1103/PhysRevC.89.054902
dc.relation Physical Review C
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.source American Physical Society
dc.title Phase-space dependence of particle-ratio fluctuations in Pb + Pb collisions from 20A to 158A GeV beam energy
dc.type Article
dc.type http://purl.org/eprint/type/JournalArticle


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