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Pre-Town Meeting on Spin Physics at an Electron-Ion Collider
Elke-Caroline Aschenauer, Ian Balitsky, Leslie Bland +29
A polarized collider (Electron--Ion Collider, or EIC), with polarized proton and light-ion beams and unpolarized heavy-ion beams with a variable center--of--mass energy $\s…
Justifying the Naive Partonic Sum Rule for Proton Spin
Xiangdong Ji, Jian-Hui Zhang, Yong Zhao
We provide a theoretical basis for understanding the spin structure of the proton in terms of the spin and orbital angular momenta of free quarks and gluons in Feynman's parton pic…
Soft Factor Subtraction and Transverse Momentum Dependent Parton Distributions on Lattice
Xiangdong Ji, Peng Sun, Xiaonu Xiong +1
We study the transverse momentum dependent (TMD) parton distributions in the newly proposed quasi-parton distribution function framework in Euclidean space. A soft factor subtracti…
Parton Physics from Large-Momentum Effective Field Theory
Xiangdong Ji
Parton physics, when formulated as light-front correlations, are difficult to study non-perturbatively, despite the promise of light-front quantization. Recently an alternative app…
Flavor Structure of the Nucleon Sea from Lattice QCD
Huey-Wen Lin, Jiunn-Wei Chen, Saul D. Cohen +1
We present the first direct lattice calculation of the isovector sea-quark parton distributions using the formalism developed recently by one of the authors. We use HIS…