View Single Post
Jun29-11, 10:27 PM
P: 270
In the parton model for deep inelastic scattering, the momenta of the partons are assumed to be longitudinal and on-shell. What's peculiar (at least rhetorically) is that even the "virtual" sea quarks are assumed to be on-shell. How does QCD justify these assumptions? Are there systematic corrections coming from non-vanishing transverse momentum and off-shell partons? Or are such corrections vanishingly small in some appropriate limit?
Phys.Org News Partner Physics news on
Physicists discuss quantum pigeonhole principle
First in-situ images of void collapse in explosives
The first supercomputer simulations of 'spin?orbit' forces between neutrons and protons in an atomic nucleus