Speaker
Description
We present a Monte-Carlo-based analysis in the Jefferson Lab Angular Momentum (JAM) Collaboration framework of the combined world polarized deep-inelastic scattering (DIS) data at moderately small values of the Bjorken $x$ variable using spin-dependent quark dipoles. We demonstrate that the world data on the double-spin asymmetries $A_{||}$ and $A_1$ at $x<0.1$ can be successfully described in this framework with Born-level initial conditions and in the limit of a large number of quark colors. This is the first ever phenomenological demonstration that global polarized DIS data at small $x$ can be fit solely by evolving spin-dependent quark dipoles. In addition, we assess the impact of the data to be collected at the Electron-Ion Collider on our knowledge of these observables, including the potential role of parity-violating DIS.
