{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.98626.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1762446"}},{"@id":"https://doi.org/10.1103/PhysRevC.102.014902","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"PHENIX Collaboration"},"creator":{"@type":"Organization","name":"PHENIX Collaboration"},"datePublished":"2020","description":"BNL-RHIC.  Charmonium is a valuable probe in heavy-ion collisions to study the properties of the quark gluon plasma, and is also an interesting probe in small collision systems to study cold nuclear matter effects, which are also present in large collision systems. With the recent observations of collective behavior of produced particles in small system collisions, measurements of the modification of charmonium in small systems have become increasingly relevant. We present the results of $J$$/$$\\psi$ measurements at forward and backward rapidity in various small collision systems, $p$$+$$p$, $p$$+$Al, $p$$+$Au and $^3$He$+$Au, at $\\sqrt{s_{NN}}$=200GeV. The results are presented in the form of the observable $R_{AB}$, the nuclear modification factor, a measure of the ratio of the $J/\\psi$ invariant yield compared to the scaled yield in $p+p$ collisions. We examine the rapidity, transverse momentum, and collision centrality dependence of nuclear effects on $J/\\psi$ production with different projectile sizes $p$ and $^3$He, and different target sizes Al and Au. The modification is found to be strongly dependent on the target size, but to be very similar for $p$$+$Au and $^{3}$He$+$Au. However, for 0%\u201420% central collisions at backward rapidity, the modification factor for $^{3}$He$+$Au is found to be smaller than that for $p$$+$Au, with a mean fit to the ratio of $0.89\\pm0.03$(stat)${\\pm}0.08$(syst), possibly indicating final state effects due to the larger projectile size.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t1","@type":"Dataset","description":"J/psi invariant yields in p+p collisions as a function of pT at forward and backward rapidity. The statistical and systematic...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t2","@type":"Dataset","description":"J/psi nuclear modification in p+Al, p+Au and 3He+Au collisions as a function of centrality and rapidity. The statistical and systematic...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t3","@type":"Dataset","description":"J/psi nuclear modification in p+Al collisions as a function of centrality and rapidity. The statistical and systematic uncertainties vary point-to-point...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t4","@type":"Dataset","description":"J/psi nuclear modification in p+Au collisions as a function of centrality and rapidity. The statistical and systematic uncertainties vary point-to-point...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t5","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au collisions as a function of centrality and rapidity. The statistical and systematic uncertainties vary point-to-point...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t6","@type":"Dataset","description":"J/psi nuclear modification in p+Al MinBias collisions as a function of pT. The statistical and systematic uncertainties vary point-to-point and...","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t7","@type":"Dataset","description":"J/psi nuclear modification in p+Au MinBias collisions as a function of pT. The statistical and systematic uncertainties vary point-to-point and...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t8","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au MInBias collisions as a function of pT. The statistical and systematic uncertainties vary point-to-point and...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t9","@type":"Dataset","description":"J/psi nuclear modification in p+Al collisions as a function of pT and centrality at backward rapidity. The statistical and systematic...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t10","@type":"Dataset","description":"J/psi nuclear modification in p+Al collisions as a function of pT and centrality at forward rapidity. The statistical and systematic...","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t11","@type":"Dataset","description":"J/psi nuclear modification in p+Au collisions as a function of pT and centrality at backward rapidity. The statistical and systematic...","name":"Table 11"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t12","@type":"Dataset","description":"J/psi nuclear modification in p+Au collisions as a function of pT and centrality at forward rapidity. The statistical and systematic...","name":"Table 12"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t13","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au collisions as a function of pT and centrality at backward rapidity. The statistical and systematic...","name":"Table 13"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t14","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au collisions as a function of pT and centrality at forward rapidity. The statistical and systematic...","name":"Table 14"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t15","@type":"Dataset","description":"J/psi nuclear modification in p+Al most central collisions as a function of pT is directly compared with p+Au collisions (Data...","name":"Table 15"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t16","@type":"Dataset","description":"J/psi nuclear modification in d+Au and p+Au most central collisions as a function of pT is directly compared at forward...","name":"Table 16"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t17","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au most central collisions as a function of pT is directly compared to p+Au collisions (Data...","name":"Table 17"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t18","@type":"Dataset","description":"J/psi nuclear modification in p+Al as a function of N_coll. The statistical and systematic uncertainties vary point-to-point and are listed...","name":"Table 18"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t19","@type":"Dataset","description":"J/psi nuclear modification in p+Au collisions as a function of N_coll. The statistical and systematic uncertainties vary point-to-point and are...","name":"Table 19"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t20","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au as a function of N_coll. The statistical and systematic uncertainties vary point-to-point and are listed...","name":"Table 20"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t21","@type":"Dataset","description":"J/psi nuclear modification in p+Al collisions as a function of nuclear thickness (T_A). The statistical and systematic uncertainties vary point-to-point...","name":"Table 21"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t22","@type":"Dataset","description":"J/psi nuclear modification in p+Au collisions as a function of nuclear thickness (T_A). The statistical and systematic uncertainties vary point-to-point...","name":"Table 22"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t23","@type":"Dataset","description":"J/psi nuclear modification in 3He+Au collisions as a function of nuclear thickness (T_A). The statistical and systematic uncertainties vary point-to-point...","name":"Table 23"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t24","@type":"Dataset","description":"J/psi mean pT squared in p+Al collisions as a function of N_coll. The statistical and systematic uncertainties vary point-to-point and...","name":"Table 24"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t25","@type":"Dataset","description":"J/psi mean pT squared in p+Au collisions as a function of N_coll. The statistical and systematic uncertainties vary point-to-point and...","name":"Table 25"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t26","@type":"Dataset","description":"J/psi mean pT squared in 3He+Au collisions as a function of N_coll. The statistical and systematic uncertainties vary point-to-point and...","name":"Table 26"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t27","@type":"Dataset","description":"J/psi invariant yields as a function of rapidity in small systems. The statistical and systematic uncertainties vary point-to-point and are...","name":"Table 27"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t28","@type":"Dataset","description":"J/psi invariant yields in p+Al collisions as a function of centrality and rapidity. The statistical and systematic uncertainties vary point-to-point...","name":"Table 28"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t29","@type":"Dataset","description":"J/psi invariant yields in p+Au collisions as a function of centrality and apidity. The statistical and systematic uncertainties vary point-to-point...","name":"Table 29"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t30","@type":"Dataset","description":"J/psi invariant yields in 3He+Au collisions as a function of centrality and rapidity. The statistical and systematic uncertainties vary point-to-point...","name":"Table 30"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t31","@type":"Dataset","description":"J/psi invariant yields in p+Al collisions as a function of pT and centrality at forward rapidity. The statistical and systematic...","name":"Table 31"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t32","@type":"Dataset","description":"J/psi invariant yields in p+Al collisions as a function of pT and centrality at backward rapidity. The statistical and systematic...","name":"Table 32"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t33","@type":"Dataset","description":"J/psi invariant yields in p+Au collisions as a function of pT and centrality at forward rapidity. The statistical and systematic...","name":"Table 33"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t34","@type":"Dataset","description":"J/psi invariant yields in p+Au collisions as a function of pT and centrality at backward rapidity. The statistical and systematic...","name":"Table 34"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t35","@type":"Dataset","description":"J/psi invariant yields in 3He+Au collisions as a function of pT and centrality at forward rapidity. The statistical and systematic...","name":"Table 35"},{"@id":"https://doi.org/10.17182/hepdata.98626.v1/t36","@type":"Dataset","description":"J/psi invariant yields in 3He+Au collisions as a function of pT and centrality at backward rapidity. The statistical and systematic...","name":"Table 36"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1762446?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/98626"}],"inLanguage":"en","name":"Measurement of $J/\\psi$ at forward and backward rapidity in $p+p$, $p+A$l, $p+A$u, and $^3$He$+$Au collisions at $\\sqrt{s_{_{NN}}}=200~{\\rm GeV}$","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1762446?version=1","version":1}