On the $γ^*γ\toπ(η,η')$ transition form factors

Details On the $γ^*γ\toπ(η,η')$ transition form factors On the $γ^*γ\toπ(η,η')$ transition form factors

2012-02-20

arxiv.org/abs/1202.4471v2

Phys.Rev.D85:051901,2012

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages

Scientific paper

10.1103/PhysRevD.85.051901

The surprising results by the BarBar collaboration on the $\pi\gamma$ transition form factor require new thoughts about the high-$Q^2$ dependence of the form factors with virtual photons. We make use of the anomaly sum rule [J. Horejsi and O. Teryaev, Z. Phys. C65, 691 (1995).] which relates the hadron spectral density to the axial anomaly [S. Adler, Phys. Rev. 177, 2426 (1969); J. S. Bell and R. Jackiw, Nuovo Cimento A 60, 47 (1969).]. We study the quark-hadron duality relation for this sum rule and find out that the increase of the rescaled form factor $Q^2F_{\pi\gamma}(Q^2)\sim\log(Q^2)$ suggested by the BaBar data requires the presence of a $1/s$-correction term in the relation between the one-loop spectral density and the hadron-continuum spectral density.

Affiliated with

Also associated with

No associations

Rating

On the $γ^*γ\toπ(η,η')$ transition form factors 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 On the $γ^*γ\toπ(η,η')$ transition form factors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the $γ^*γ\toπ(η,η')$ transition form factors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-422061