Production of the [rho](770)0 meson in pp and Pb-Pb collisions at √sNN=2.76TeV
The production of the ρ(770)0 meson has been measured at midrapidity (|y|<0.5) in pp and centrality differential Pb-Pb collisions at √sNN= 2.76 TeV with the ALICE detector at the Large Hadron Collider. The particles have been reconstructed in the ρ(770)0→π+π− decay channel in the transverse-momen...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 June 2019
|
| In: |
Physical review
Year: 2019, Jahrgang: 99, Heft: 6, Pages: 064901 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.99.064901 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevC.99.064901 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.99.064901 |
| Verfasserangaben: | ALICE Collaboration |
| Zusammenfassung: | The production of the ρ(770)0 meson has been measured at midrapidity (|y|<0.5) in pp and centrality differential Pb-Pb collisions at √sNN= 2.76 TeV with the ALICE detector at the Large Hadron Collider. The particles have been reconstructed in the ρ(770)0→π+π− decay channel in the transverse-momentum (pT) range 0.5-11 GeV/c. A centrality-dependent suppression of the ratio of the integrated yields 2ρ(770)0/(ππ−) is observed. The ratio decreases by ∼40% from pp to central Pb-Pb collisions. A study of the pT-differential 2ρ(770)0/(ππ−) ratio reveals that the suppression occurs at low transverse momenta, pT<2 GeV/c. At higher momentum, particle ratios measured in heavy-ion and pp collisions are consistent. The observed suppression is very similar to that previously measured for the K∗(892)0/K ratio and is consistent with EPOS3 predictions that may imply that rescattering in the hadronic phase is a dominant mechanism for the observed suppression. |
|---|---|
| Beschreibung: | ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, H. Beck, M. Danisch, A. Deisting, V. Feuillard, P. Glässel, J. Kim, M. Kim, S. Klewin, M.L. Knichel, M.K. Köhler, L. Leardini, J. Mercado Pérez, A. Ohlson, Y.C. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D. Weiser, B. Windelband [und weitere] Im Titel ist „rho“ als griechischer Buchstabe dargestellt Im Titel ist "0" nach der Klammer hochgestellt Im Titel stehen sNN unter dem Wurzelsymbol Im Titel sind "NN" in der Wuzelfunktion tiefgestellt Gesehen am 22.01.2020 |
| Beschreibung: | Online Resource |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.99.064901 |