35 citations · 55 across the 6 of their papers we have counts for
6 papers
Effective Angular Momentum Operators in NRQED and Matching at One-Loop Order
Panying Chen, Xiangdong Ji, Yue Zhang
We derive the effective angular momentum operator to and one-loop order in non-relativistic quantum electrodynamics (NRQED). In both dimensional and three-momentum-cutoff r…
Angular Momentum in Non-Relativistic QED and Photon Contribution to Spin of Hydrogen Atom
Panying Chen, Xiangdong Ji, Yang Xu +1
We study angular momentum in non-relativistic quantum electrodynamics (NRQED). We construct the effective total angular momentum operator by applying Noether's theorem to the NRQED…
Chiral Logarithms in Kaon Decay Amplitudes in General Effective Flavor Theories
Panying Chen, Hongwei Ke, Xiangdong Ji
We study the chiral logarithms in kaon decay amplitudes from new flavor physics in beyond-standard-model theories. We systematically classify the chiral structures of dimens…
Direct CP Violation in K-decay and Minimal Left-Right Symmetry Scale
Panying Chen, Hongwei Ke, Xiangdong Ji
We calculate the new contribution to the direct CP-violation parameter in decay in the minimal left-right symmetric model with the recently-obtained right-handed qua…
Polarized Gluon Distribution Delta g(x) in the Proton
Panying Chen, Xiangdong Ji
We study the polarized gluon distribution in a longitudinally polarized proton. We argue that the distribution can be calculated approximately from the quark color currents…
QCD Factorization for Deep-Inelastic Scattering At Large Bjorken
Panying Chen, Ahmad Idilbi, Xiangdong Ji
We study deep-inelastic scattering factorization on a nucleon in the end-point regime where the traditional operator product expansion is suppo…