{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.83784.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1672801"}},{"@id":"https://doi.org/10.1140/epjc/s10052-018-6027-2","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2018","description":"CERN-LHC. Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at sqrt{s} = 8 TeV.\nInclusive J/psi polarization parameters is studied in proton-proton collisions at a centre-of-mass energy sqrt{s} = 8 TeV, using the ALICE detector at the CERN LHC. \nThe J/psi mesons are reconstructed, via their decay to a muon pair, in the rapidity interval 2.5 < y < 4.0.     \nThe polarization parameters (lambda_theta, lambda_phi and lambda_thetaphi) of inclusive J/psi, as well as an invariant frame quantity, are studied in both helicity and Collins-Soper frames as a function of transverse momentum (p_T) in the interval 2 < p_T < 15 GeV/c. \nThe p_T integrated results are projected in 2-D parameter-space.\nThe measurements exhibit no polarization of inclusive J/psi within experimental uncertainties. \nIn the paper, results are compared to previous measurements at sqrt{s} = 7 TeV from ALICE and LHCb, and also to up-to-date NLO predictions of the Color-Singlet-Model and the NRQCD calculation at sqrt{s} = 8 TeV.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t1","@type":"Dataset","description":"ALICE inclusive J/psi polarization parameters lambda_theta in the Collins-Soper frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t2","@type":"Dataset","description":"ALICE inclusive J/psi polarization parameters lambda_phi in the Collins-Soper frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t3","@type":"Dataset","description":"ALICE inclusive J/psi polarization parameters lambda_thetaphi in the Collins-Soper frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t4","@type":"Dataset","description":"ALICE inclusive J/psi polarization parameters lambda_theta in the helicity frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t5","@type":"Dataset","description":"ALICE inclusive J/psi polarization parameters lambda_phi in the helicity frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t6","@type":"Dataset","description":"ALICE inclusive J/psi polarization parameters lambda_thetaphi in the helicity frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t7","@type":"Dataset","description":"ALICE inclusive J/psi frame-invariant quantity \\widetilde{\\lambda} in the Collins-Soper frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t8","@type":"Dataset","description":"ALICE inclusive J/psi frame-invariant quantity \\widetilde{\\lambda} in the helicity frame as a function of p_T in pp collisions at sqrt{s}...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t9","@type":"Dataset","description":"Contour plot (68% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t10","@type":"Dataset","description":"Contour plot (95% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t11","@type":"Dataset","description":"Contour plot (68% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 11"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t12","@type":"Dataset","description":"Contour plot (95% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 12"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t13","@type":"Dataset","description":"Contour plot (68% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 13"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t14","@type":"Dataset","description":"Contour plot (95% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 14"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t15","@type":"Dataset","description":"Contour plot (68% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 15"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t16","@type":"Dataset","description":"Contour plot (95% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 16"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t17","@type":"Dataset","description":"Contour plot (68% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 17"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t18","@type":"Dataset","description":"Contour plot (95% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 18"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t19","@type":"Dataset","description":"Contour plot (68% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 19"},{"@id":"https://doi.org/10.17182/hepdata.83784.v1/t20","@type":"Dataset","description":"Contour plot (95% CL) of ALICE inclusive J/psi average pT-integrated (3 < pT < 15 GeV/c in the rapidity interval...","name":"Table 20"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1672801?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/83784"}],"inLanguage":"en","name":"Measurement of the inclusive J/$\\psi$ polarization at forward rapidity in pp collisions at $\\sqrt{s} = 8$ TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1672801?version=1","version":1}