Speaker
Prof.
Firooz Arash
(Physics Department, Tafresh University, Tafresh, Iran)
Summary
We use Ji’s decomposition of nucleon spin and calculate the Orbital Angular Momentum
of quarks and gluon in the nucleon. Calculations are carried out in the next to leading
order utilizing the so-called valon model. It is found that the average quark orbital angular
momentum is positive, but small, and the average gluon orbital angular momentum is negative
and large. We also report on some regularities about the total angular momentum of the
quarks and the gluon, as well as on the orbital angular momentum of the separate partons.
Primary author
Prof.
Firooz Arash
(Physics Department, Tafresh University, Tafresh, Iran)
