Factorization, Power Corrections, and the Pion Form Factor

Details Factorization, Power Corrections, and the Pion Form Factor Factorization, Power Corrections, and the Pion Form Factor

2003-01-27

arxiv.org/abs/hep-ph/0301240v3

Phys.Rev. D70 (2004) 054024

Physics

High Energy Physics

High Energy Physics - Phenomenology

Published, extended, version

Scientific paper

10.1103/PhysRevD.70.054024

This letter is an investigation of the pion form factor utilizing recently developed effective field theory techniques. The primary results reported are: Both the transition and electromagnetic form factors are corrected at order $\Lambda/Q$. However, these corrections only arise due to time ordered products which are sensitive to soft components of the pion. The usual higher twist wave function corrections contribute only at order $\Lambda^2/Q^2$, when the quark mass vanishes. In the case of the electromagnetic form factor the $\Lambda/Q$ power correction is enhanced by a power of $1/\alpha_s(Q)$ relative to the leading order result of Brodsky and Lepage, if the scale $\sqrt{\Lambda Q}$ is non-perturbative. This enhanced correction could explain the discrepancy with the data.

Affiliated with

Also associated with

No associations

Rating

Factorization, Power Corrections, and the Pion Form Factor 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 Factorization, Power Corrections, and the Pion Form Factor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Factorization, Power Corrections, and the Pion Form Factor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-317181