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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...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (Author) , Beck, Hans (Author) , Danisch, Meike (Author) , Deisting, Alexander (Author) , Feuillard, Victor (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Kim, Minjung (Author) , Klewin, Sebastian (Author) , Knichel, Michael Linus (Author) , Köhler, Markus Konrad (Author) , Leardini, Lucia (Author) , Mercado Pérez, Jorge (Author) , Ohlson, Alice (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Weiser, Dennis (Author) , Windelband, Bernd (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 4 June 2019
In: Physical review
Year: 2019, Volume: 99, Issue: 6, Pages: 064901
ISSN:2469-9993
DOI:10.1103/PhysRevC.99.064901
Online Access:Verlag, Volltext: https://doi.org/10.1103/PhysRevC.99.064901
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.99.064901
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Author Notes:ALICE Collaboration
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Summary: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.
Item Description: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
Physical Description:Online Resource
ISSN:2469-9993
DOI:10.1103/PhysRevC.99.064901

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