{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.172112.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/3118595"}}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2026","description":"Measurements of transverse momentum ($p_{\\rm T}) and pseudorapidity ($\\eta$) dependent flow vector fluctuations in p--Pb collisions at $\\sqrt{s_{\\rm NN}} = 5.02 TeV at the CERN Large Hadron Collider are presented. Utilizing long-range two-particle correlations with the template fit method, potential biases from non-flow effects such as jets and resonance decays are effectively suppressed. Significant $p_{\\rm T}$ and $\\eta$ dependent fluctuations of the second-harmonic flow vector are observed with more than $5\\sigma$ confidence in p--Pb collisions, mirroring observations in Pb--Pb collisions. These results cannot be solely attributed to non-flow effects, providing new evidence for flow vector fluctuations in small collision systems at the LHC. Comparisons with hydrodynamic model calculations from 3DGlauber+MUSIC+UrQMD and parton transport model calculations from AMPT significantly enhance the understanding of the three-dimensional initial geometry and its event-by-event fluctuations, offering critical insights into the origin of collective flow in small collision systems at the LHC.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t1","@type":"Dataset","description":"$v_{2}\\{2\\rm PC\\}/v_{2}[2\\rm PC]$ as a function of transverse momentum in different centrality classes with $0.2 < p_{\\rm T}^{\\rm ref} <...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t2","@type":"Dataset","description":"The ratio of $v_{2}\\{2\\rm PC\\}/v_{2}[2\\rm PC]$ between different centrality classes as a function of transverse momentum with $0.2 < p_{\\rm...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t3","@type":"Dataset","description":"The ratio $r_2(p_\\mathrm{T}^{a},p_\\mathrm{T}^b)$ as a function of the absolute difference in momentum $|p_\\mathrm{T}^{a}-p_\\mathrm{T}^b|$ with $0.6 < p_\\mathrm{T}^{a} < 0.8$ in...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t4","@type":"Dataset","description":"The ratio $r_2(p_\\mathrm{T}^{a},p_\\mathrm{T}^b)$ as a function of the absolute difference in momentum $|p_\\mathrm{T}^{a}-p_\\mathrm{T}^b|$ with $0.8 < p_\\mathrm{T}^{a} < 1.0$ in...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t5","@type":"Dataset","description":"The ratio $r_2(p_\\mathrm{T}^{a},p_\\mathrm{T}^b)$ as a function of the absolute difference in momentum $|p_\\mathrm{T}^{a}-p_\\mathrm{T}^b|$ with $1.0 < p_\\mathrm{T}^{a} < 1.5$ in...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t6","@type":"Dataset","description":"The ratio $r_2(p_\\mathrm{T}^{a},p_\\mathrm{T}^b)$ as a function of the absolute difference in momentum $|p_\\mathrm{T}^{a}-p_\\mathrm{T}^b|$ with $1.5 < p_\\mathrm{T}^{a} < 2.0$ in...","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t7","@type":"Dataset","description":"The ratio $r_2(p_\\mathrm{T}^{a},p_\\mathrm{T}^b)$ as a function of the absolute difference in momentum $|p_\\mathrm{T}^{a}-p_\\mathrm{T}^b|$ with $2.0 < p_\\mathrm{T}^{a} < 2.5$ in...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t8","@type":"Dataset","description":"The ratio $r_2(p_\\mathrm{T}^{a},p_\\mathrm{T}^b)$ as a function of the absolute difference in momentum $|p_\\mathrm{T}^{a}-p_\\mathrm{T}^b|$ with $2.5 < p_\\mathrm{T}^{a} < 3.0$ in...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t9","@type":"Dataset","description":"The ratio $R_2(\\eta^{a},\\eta^b)$ as a function of $|\\eta^a|$ in different centrality classes and $1.8 < |\\eta^b| < 3.2$ and the...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t10","@type":"Dataset","description":"The ratio $R_2(\\eta^{a},\\eta^b)$ as a function of $|\\eta^a|$ in 0-20% centrality in different $|\\eta^b|$ ranges","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.172112.v1/t11","@type":"Dataset","description":"The ratio of $R_2(\\eta^{a},\\eta^b)$ between different centrality classes as a function of $|\\eta^a|$ with $1.8 < |\\eta^b| < 3.2$","name":"Table 11"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins3118595?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/172112"}],"inLanguage":"en","name":"Observation of flow vector fluctuations in p$-$Pb collisions at $\\mathbf{\\sqrt{\\textit{s}_{_{\\bf NN}}}}=$ 5.02 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins3118595?version=1","version":1}