Abstract
The production of the meson has been measured at midrapidity in and centrality differential Pb-Pb collisions at 2.76 TeV with the ALICE detector at the Large Hadron Collider. The particles have been reconstructed in the decay channel in the transverse-momentum () range 0.5–11 . A centrality-dependent suppression of the ratio of the integrated yields is observed. The ratio decreases by from to central Pb-Pb collisions. A study of the -differential ratio reveals that the suppression occurs at low transverse momenta, . At higher momentum, particle ratios measured in heavy-ion and collisions are consistent. The observed suppression is very similar to that previously measured for the ratio and is consistent with EPOS3 predictions that may imply that rescattering in the hadronic phase is a dominant mechanism for the observed suppression.
4 More- Received 24 May 2018
DOI:https://doi.org/10.1103/PhysRevC.99.064901
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©2019 CERN, for the ALICE Collaboration