Speaker
Yong Zhao
(University of Maryland, College Park)
Description
In this talk, I will discuss the experimental observable at the electron-ion collider (EIC) that can be used to identify the gluon orbital angular momentum (OAM) density at arbitrary $x$. We will show that the single longitudinal target-spin asymmetry in exclusive dijet production will be sensitive to the gluon OAM density. The latter contributes to the spin asymmetry with a characteristic azimuthal angular modulation of $\sin(\phi_\Delta-\phi_q)$, where $\phi_\Delta$ and $\phi_q$ arethe azimuthal angles of the proton momentum transfer and the relative transverse momentum between the quark-antiquark pair.
Author
Yong Zhao
(University of Maryland, College Park)
Co-author
Feng Yuan
(LBNL)