Production of the ρ(770)0 meson in pp and Pb-Pb collisions at √sNN = 2.76 TeV
ALICE Collaboration. (2019). Production of the ρ(770)0 meson in pp and Pb-Pb collisions at √sNN = 2.76 TeV. Physical Review C, 99(6), Article 064901. https://doi.org/10.1103/PhysRevC.99.064901
Julkaistu sarjassa
Physical Review CTekijät
Päivämäärä
2019Tekijänoikeudet
© 2019 CERN, for the ALICE Collaboration.
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/(π++π−) is observed. The ratio decreases by ∼40% from pp to central Pb-Pb collisions. A study of the pT-differential 2ρ(770)0/(π++π−) 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.
Julkaisija
American Physical SocietyISSN Hae Julkaisufoorumista
2469-9985Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/32130026
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