{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.168410.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2648610"}},{"@id":"https://doi.org/10.1103/5bdl-cry6","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2026","description":"This letter presents the first measurement of the angle between different jet axes (denoted as ${\\Delta}R$) in Pb$-$Pb collisions. The measurement is carried out in the 0$-$10% most-central events at $\\sqrt{s_{\\rm NN}} = 5.02$ TeV. Jets are assembled by clustering charged particles at midrapidity using the anti-$k_{\\rm T}$ algorithm with resolution parameters $R=0.2$ and $0.4$ and transverse momenta in the intervals $40 < p_{\\rm T}^{\\rm ch jet} < 140$ GeV/$c$ and $80 < p_{\\rm T}^{\\rm ch jet} < 140$ GeV/$c$, respectively. Measurements at these low transverse momenta enhance the sensitivity to quark$-$gluon plasma (QGP) effects. A comparison to models implementing various mechanisms of jet energy loss in the QGP shows that the observed narrowing of the Pb$-$Pb distribution relative to pp can be explained if quark-initiated jets are more likely to emerge from the medium than gluon-initiated jets. These new measurements discard intra-jet $p_{\\rm T}$ broadening as described in a model calculation with the BDMPS formalism as the main mechanism of energy loss in the QGP. The data are sensitive to the angular scale at which the QGP can resolve two independent splittings, favoring mechanisms that incorporate incoherent energy loss.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t1","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$Standard for jets of $R=0.2$, in the interval $40&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;60 \\ {\\rm...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t2","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$Standard for jets of $R=0.2$, in the interval $40&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;60 \\ {\\rm GeV}/c$....","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t3","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$Standard for jets of $R=0.2$, in the interval $60&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;80 \\ {\\rm...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t4","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$Standard for jets of $R=0.2$, in the interval $60&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;80 \\ {\\rm GeV}/c$....","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t5","@type":"Dataset","description":"Pb$\\textendash$Pb $\\Delta R_{\\rm axis}/R$ distribution for WTA$\\textendash$Standard for jets of $R=0.4$ and $0.2$, in the interval $100&lt;p_{\\rm T}^{\\rm ch \\...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t6","@type":"Dataset","description":"Pb$\\textendash$Pb ($R=0.4$)/ Pb$\\textendash$Pb ($R=0.2$) ratio distribution for WTA$\\textendash$Standard in the interval $100&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;140 \\ {\\rm GeV}/c$.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t7","@type":"Dataset","description":"Pb$\\textendash$Pb $\\Delta R_{\\rm axis}/R$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}}=0.2,\\beta=0$) for jets of $R=0.4$ and $0.2$, in the...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t8","@type":"Dataset","description":"Pb$\\textendash$Pb ($R=0.4$)/ Pb$\\textendash$Pb ($R=0.2$) ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}}=0.2,\\beta=0$) in the interval $100&lt;p_{\\rm T}^{\\rm ch \\...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t9","@type":"Dataset","description":"Pb$\\textendash$Pb $\\Delta R_{\\rm axis}/R$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}}=0.1,\\beta=0$) for jets of $R=0.4$ and $0.2$, in the...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t10","@type":"Dataset","description":"Pb$\\textendash$Pb ($R=0.4$)/ Pb$\\textendash$Pb ($R=0.2$) ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}}=0.1,\\beta=0$) in the interval $100&lt;p_{\\rm T}^{\\rm ch \\...","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t11","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.2$, in...","name":"Table 11"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t12","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.2$, in the...","name":"Table 12"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t13","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.2$, in...","name":"Table 13"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t14","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.2$, in the...","name":"Table 14"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t15","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.2$, in...","name":"Table 15"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t16","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.2$, in the...","name":"Table 16"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t17","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.2$, in...","name":"Table 17"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t18","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.2$, in the...","name":"Table 18"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t19","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$Standard for jets of $R=0.2$, in the interval $80&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;100 \\ {\\rm...","name":"Table 19"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t20","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$Standard for jets of $R=0.2$, in the interval $80&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;100 \\ {\\rm GeV}/c$....","name":"Table 20"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t21","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$Standard for jets of $R=0.4$, in the interval $80&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;100 \\ {\\rm...","name":"Table 21"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t22","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$Standard for jets of $R=0.4$, in the interval $80&lt;p_{\\rm T}^{\\rm ch \\ jet}&lt;100 \\ {\\rm GeV}/c$....","name":"Table 22"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t23","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.2$, in...","name":"Table 23"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t24","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.2$, in the...","name":"Table 24"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t25","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.4$, in...","name":"Table 25"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t26","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.1,\\beta = 0$) for jets of $R=0.4$, in the...","name":"Table 26"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t27","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.2$, in...","name":"Table 27"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t28","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.2$, in the...","name":"Table 28"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t29","@type":"Dataset","description":"$\\Delta R_{\\rm axis}$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.4$, in...","name":"Table 29"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t30","@type":"Dataset","description":"Pb$\\textendash$Pb/pp ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}} = 0.2,\\beta = 0$) for jets of $R=0.4$, in the...","name":"Table 30"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t31","@type":"Dataset","description":"Pb$\\textendash$Pb $\\Delta R_{\\rm axis}/R$ distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}}=0.1,\\beta=0$) for jets of $R=0.4$ and $0.2$, in the...","name":"Table 31"},{"@id":"https://doi.org/10.17182/hepdata.168410.v1/t32","@type":"Dataset","description":"Pb$\\textendash$Pb ($R=0.4$)/ Pb$\\textendash$Pb ($R=0.2$) ratio distribution for WTA$\\textendash$SD with grooming setting ($z_{{\\rm cut}}=0.1,\\beta=0$) in the interval $100&lt;p_{\\rm T}^{\\rm ch \\...","name":"Table 32"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2648610?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/168410"}],"inLanguage":"en","name":"Measurement of the angle between jet axes in Pb$-$Pb collisions at $\\sqrt{s_{\\rm NN}} = 5.02$ TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2648610?version=1","version":1}