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Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV
Recent results of the NA49 energy scan programme show a sharp maximum of the ratio of $K^{+}$ to $\pi^{+}$ yields in central Pb+Pb collisions at beam energies of 20-30 A GeV. This observation has been interpreted as an indication of a phase transition at low SPS energies. We present results on event...
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| Lenguaje: | eng |
| Publicado: |
2005
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| Acceso en línea: | https://dx.doi.org/10.1088/0954-3899/31/6/061 http://cds.cern.ch/record/913849 |
| _version_ | 1780908960018071552 |
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| author | Roland, Christof |
| author_facet | Roland, Christof |
| author_sort | Roland, Christof |
| collection | CERN |
| description | Recent results of the NA49 energy scan programme show a sharp maximum of the ratio of $K^{+}$ to $\pi^{+}$ yields in central Pb+Pb collisions at beam energies of 20-30 A GeV. This observation has been interpreted as an indication of a phase transition at low SPS energies. We present results on event-by-event fluctuations of the kaon to pion and proton to pion ratios at beam energies close to this maximum. A significant increase of the fluctuation signal of the kaon to pion ratio with deceasing beam energy is observed. (12 refs). |
| id | cern-913849 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2005 |
| record_format | invenio |
| spelling | cern-9138492019-09-30T06:29:59Zdoi:10.1088/0954-3899/31/6/061http://cds.cern.ch/record/913849engRoland, ChristofEvent-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeVNuclear PhysicsRecent results of the NA49 energy scan programme show a sharp maximum of the ratio of $K^{+}$ to $\pi^{+}$ yields in central Pb+Pb collisions at beam energies of 20-30 A GeV. This observation has been interpreted as an indication of a phase transition at low SPS energies. We present results on event-by-event fluctuations of the kaon to pion and proton to pion ratios at beam energies close to this maximum. A significant increase of the fluctuation signal of the kaon to pion ratio with deceasing beam energy is observed. (12 refs).oai:cds.cern.ch:9138492005 |
| spellingShingle | Nuclear Physics Roland, Christof Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV |
| title | Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV |
| title_full | Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV |
| title_fullStr | Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV |
| title_full_unstemmed | Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV |
| title_short | Event-by-event fluctuations of particle ratios in central Pb+Pb collisions at 20-158 a GeV |
| title_sort | event-by-event fluctuations of particle ratios in central pb+pb collisions at 20-158 a gev |
| topic | Nuclear Physics |
| url | https://dx.doi.org/10.1088/0954-3899/31/6/061 http://cds.cern.ch/record/913849 |
| work_keys_str_mv | AT rolandchristof eventbyeventfluctuationsofparticleratiosincentralpbpbcollisionsat20158agev |