K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV
Production of the K∗(892)0 and K∗(892)0 resonances was studied via their K+π− and K−π+ decay modes in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV(√sNN = 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum and rapidity distributions were measured and...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/72140 https://orcid.org/0000-0001-8983-2169 |
| _version_ | 1826198520508448768 |
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| author | Veres, Gabor Roland, Christof E Roland, Gunther M |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Veres, Gabor Roland, Christof E Roland, Gunther M |
| author_sort | Veres, Gabor |
| collection | MIT |
| description | Production of the K∗(892)0 and K∗(892)0 resonances was studied via their K+π− and K−π+ decay modes in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV(√sNN = 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum and rapidity distributions were measured and total yields were estimated. The yield of K∗ exceeds that of K∗ by about a factor of two in nucleus-nucleus reactions. The total yield ratios <K∗>/<K+> and <K∗>/<K\−>are strongly suppressed in central Pb + Pb compared to p + p, C + C, and Si + Si collisions, in agreement with the expected attenuation of these short-lived resonance states in the hadronic phase of the expanding fireball. The UrQMD model, although incorporating such a scenario, does not provide a quantitative description of the experimental results. The statistical hadron gas model assuming the same freeze-out parameters for stable hadrons and resonances overestimates the <K ∗>/<K> ratios in central Pb + Pb collisions by about a factor of 2.5. |
| first_indexed | 2024-09-23T11:05:50Z |
| format | Article |
| id | mit-1721.1/72140 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:05:50Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/721402023-02-26T08:01:43Z K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV Veres, Gabor Roland, Christof E Roland, Gunther M Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Roland, Gunther M. Roland, Christof E. Roland, Gunther M. Veres, Gabor Production of the K∗(892)0 and K∗(892)0 resonances was studied via their K+π− and K−π+ decay modes in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV(√sNN = 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum and rapidity distributions were measured and total yields were estimated. The yield of K∗ exceeds that of K∗ by about a factor of two in nucleus-nucleus reactions. The total yield ratios <K∗>/<K+> and <K∗>/<K\−>are strongly suppressed in central Pb + Pb compared to p + p, C + C, and Si + Si collisions, in agreement with the expected attenuation of these short-lived resonance states in the hadronic phase of the expanding fireball. The UrQMD model, although incorporating such a scenario, does not provide a quantitative description of the experimental results. The statistical hadron gas model assuming the same freeze-out parameters for stable hadrons and resonances overestimates the <K ∗>/<K> ratios in central Pb + Pb collisions by about a factor of 2.5. United States. Dept. of Energy (grant no. DE-FG03-97ER41020/A000) 2012-08-15T14:15:50Z 2012-08-15T14:15:50Z 2011-12 2011-09 Article http://purl.org/eprint/type/JournalArticle 0556-2813 1089-490X http://hdl.handle.net/1721.1/72140 Anticic, T. et al. “K^{*}(892)^{0} and K[over ¯]^{*}(892)^{0} Production in Central Pb + Pb, Si + Si, C + C, and Inelastic p + p Collisions at 158A GeV.” Physical Review C 84.6 (2011): 064909. © 2011 American Physical Society. https://orcid.org/0000-0001-8983-2169 en_US http://dx.doi.org/10.1103/PhysRevC.84.064909 Physical Review C 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. application/pdf American Physical Society APS |
| spellingShingle | Veres, Gabor Roland, Christof E Roland, Gunther M K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV |
| title | K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV |
| title_full | K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV |
| title_fullStr | K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV |
| title_full_unstemmed | K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV |
| title_short | K*(892)0 and K̅ *(892)0 production in central Pb + Pb, Si + Si, C + C, and inelastic p + p collisions at 158A GeV |
| title_sort | k 892 0 and k 892 0 production in central pb pb si si c c and inelastic p p collisions at 158a gev |
| url | http://hdl.handle.net/1721.1/72140 https://orcid.org/0000-0001-8983-2169 |
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