Twist Four Longitudinal Structure Function for a Positronium-like Bound State in Light-Front QED

Details Twist Four Longitudinal Structure Function for a Positronium-like Bound State in Light-Front QED Twist Four Longitudinal Structure Function for a Positronium-like Bound State in Light-Front QED

2001-04-18

arxiv.org/abs/hep-ph/0104175v2

Phys.Lett. B517 (2001) 109-118

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, revtex, more discussions added, results unchanged

Scientific paper

10.1016/S0370-2693(01)00954-6

To have an analytic understanding of the higher-twist structure functions, we calculate twist four longitudinal structure function for a positronium-like bound state in weak coupling light-front QED. We find that in the weakly coupled system, the fermionic part of $F_L$ is related to the kinetic energy of the fermions and not to the interaction. We verify a previously proposed sum rule in this limit, which in this case reduces to a relation connecting the kinetic and the potential energies to the binding energy of positronium. Using the analytic form of the wave function of positronium in this limit, we show that the constituent counting rule does not hold for $x \to 1$. The twist four $F_L$ in this limit is similar in form to a widely used phenomenological ansatz.

Affiliated with

Also associated with

No associations

Rating

Twist Four Longitudinal Structure Function for a Positronium-like Bound State in Light-Front QED does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Twist Four Longitudinal Structure Function for a Positronium-like Bound State in Light-Front QED, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Twist Four Longitudinal Structure Function for a Positronium-like Bound State in Light-Front QED will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-564320