40 citations · 40 across the 1 of their papers we have counts for
4 papers · 1 filter
How Much of the Nucleon Spin is Carried by Glue?
Ian Balitsky, Xiangdong Ji
We estimate in the QCD sum rule approach the amount of the nucleon spin carried by the gluon angular momentum: the sum of the gluon spin and orbital angular momenta. The result ind…
QCD Sum Rule Calculation for the Tensor Charge of the Nucleon
Hanxin He, Xiangdong Ji
The nucleon's tensor charges (isovector and isoscalar ) are calculated using the QCD sum rules in the presence of an external tensor field. In addition t…
The Nucleon's Tensor Charge
Hanxin He, Xiangdong Ji
We seek to understand the physical significance of the nucleon's tensor charge and make estimates of its size in phenomenological models and the QCD sum rule.
Novel Quark Fragmentation Functions and the Nucleon's Transversity Distribution
R. L. Jaffe, Xiangdong Ji
We define twist-two and twist-three quark fragmentation functions in Quantum Chromodynamics (QCD) and study their physical implications. Using this formalism we show how the nucleo…