Quark transverse spin-orbit correlations
arXiv:1703.08322 · doi:10.1016/j.physletb.2017.10.003
Abstract
We extend the study of quark spin-orbit correlations in the nucleon to the case of transverse polarization. At the leading-twist level, this completes the spin structure of the quark kinetic energy-momentum tensor. In particular, we revisit the transversity decomposition of angular momentum proposed a decade ago by Burkardt and introduce a new transverse correlation, namely between quark transversity and orbital angular momentum. We also provide for the first time the Wandzura-Wilczek expression for the second Mellin moment of twist-3 transversity generalized parton distributions, along with a new sum rule. Based on lattice calculation results, we conclude that the quark transverse spin-orbit correlation is negative for both up and down flavors, just like in the longitudinal case.
7 pages, 1 table
References in corpus (5)
- Quark Wigner Distributions and Orbital Angular Momentum
- Transverse spin structure of the nucleon from lattice QCD simulations
- Nucleon spin densities in a light-front constituent quark model
- Tensor charges of light baryons in the Infinite Momentum Frame
- Where do we stand with a 3-D picture of the proton?
Cited by in corpus (8)
- Revisiting the mechanical properties of the nucleon
- On the hadron mass decomposition
- Moments of nucleon generalized parton distributions from lattice QCD simulations at physical pion mass
- Transversity GPDs of the proton from lattice QCD
- Twist-3 GPDs in Deeply-Virtual Compton Scattering
- Lorentz Invariance and QCD Equation of Motion Relations for Generalized Parton Distributions and the Dynamical Origin of Proton Orbital Angular Momentum
- Spin-orbit correlation and spatial distributions for spin-0 hadrons
- Deciphering Twist-3 Chiral-Even GPDs in the Light-Front Quark-Diquark Model