Adamiak DKovchegov Y.VMelnitchouk WPitonyak DNOBUO SATOSievert M.D(Jefferson Lab Angular Momentum Collaboration)2022-04-252022-04-25202124700010https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112362672&doi=10.1103%2fPhysRevD.104.L031501&partnerID=40&md5=56b0f8aef27330a97e0f81cb6b067b9bhttps://scholars.lib.ntu.edu.tw/handle/123456789/606432We present a Monte Carlo based analysis of the combined world data on polarized lepton-nucleon deep-inelastic scattering at small Bjorken x within the polarized quark dipole formalism. We show for the first time that double-spin asymmetries at x<0.1 can be successfully described using only small-x evolution derived from first-principles QCD, allowing predictions to be made for the g1 structure function at much smaller x. Anticipating future data from the Electron-Ion Collider, we assess the impact of electromagnetic and parity-violating polarization asymmetries on g1 and demonstrate an extraction of the individual flavor helicity parton distribution functions at small x. ? 2021 authors. Published by the American Physical Society.journal article10.1103/PhysRevD.104.L0315012-s2.0-85112362672