{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.88050.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1672789"}},{"@id":"https://doi.org/10.1016/j.physletb.2018.11.039","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2019","description":"The elliptic flow of inclusive and direct photons was measured at mid-rapidity in two centrality classes 0--20\\% and 20--40\\% in Pb--Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV by ALICE. Photons were detected with the highly segmented electromagnetic calorimeter PHOS and via conversions in the detector material with the $e^+e^-$ pairs reconstructed in the central tracking system. The results of the two methods were combined and the direct photon elliptic flow was extracted in the transverse momentum range $0.9 < p_\\text{T} < 6.2$ GeV/$c$. We test the hypothesis $v_{2}^{\\gamma,dir} \\equiv 0$ for $0.9 < p_\\text{T} < 2.1$ GeV/$c$ and obtain a significance of $1.4\\sigma$ for the 0--20\\% class and $1.0\\sigma$ for the 20--40\\% class. A comparison to RHIC data shows a similar magnitude of the measured elliptic flow, while hydrodynamic and transport model calculations predict a smaller flow than observed.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t1","@type":"Dataset","description":"Ratio V2{GAMMA,INCLUSIVE,PCM}/V2{GAMMA,INCLUSIVE,COMBINED} as function of $p_\\text{T}$, collision centrality 0-20%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t2","@type":"Dataset","description":"Ratio V2{GAMMA,INCLUSIVE,PHOS}/V2{GAMMA,INCLUSIVE,COMBINED} as function of $p_\\text{T}$, collision centrality 20-40%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t3","@type":"Dataset","description":"V2{GAMMA,DECAY} as function of $p_\\text{T}$, collision centrality 0-20%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t4","@type":"Dataset","description":"V2{GAMMA,DECAY} as function of $p_\\text{T}$, collision centrality 20-40%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t5","@type":"Dataset","description":"V2{GAMMA,INCLUSIVE} as function of $p_\\text{T}$, collision centrality 0-20%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t6","@type":"Dataset","description":"V2{GAMMA,INCLUSIVE} as function of $p_\\text{T}$, collision centrality 20-40%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t7","@type":"Dataset","description":"V2{GAMMA,DIRECT} as function of $p_\\text{T}$, collision centrality 0-20%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.88050.v1/t8","@type":"Dataset","description":"V2{GAMMA,DIRECT} as function of $p_\\text{T}$, collision centrality 20-40%, for Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV.","name":"Table 8"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1672789?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/88050"}],"inLanguage":"en","name":"Direct photon elliptic flow in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1672789?version=1","version":1}