Abstract
Azimuthally anisotropic distributions of , , and mesons were studied in the central rapidity region () in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collision, with the ALICE detector at the LHC. The second Fourier coefficient (commonly denoted elliptic flow) was measured in the centrality class 30%–50% as a function of the meson transverse momentum , in the range . The measured of mesons is comparable in magnitude to that of light-flavor hadrons. It is positive in the range with significance, based on the combination of statistical and systematic uncertainties.
- Received 14 May 2013
DOI:https://doi.org/10.1103/PhysRevLett.111.102301
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© 2013 CERN, for the ALICE Collaboration