On the two-photon contributions to $e^+e^-\toηγ$ and $e^+e^-\toη^\primeγ$

Details On the two-photon contributions to $e^+e^-\toηγ$ and $e^+e^-\toη^\primeγ$ On the two-photon contributions to $e^+e^-\toηγ$ and $e^+e^-\toη^\primeγ$

2006-06-28

arxiv.org/abs/hep-ph/0606284v1

Phys.Rev.D74:054003,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, LaTeX, needs FEYNMAN package

Scientific paper

10.1103/PhysRevD.74.054003

Motivated by recent BABAR measurements of the $\gamma^*\to\gamma \eta$ and $\gamma^*\to\gamma \eta^\prime $ transition form factors, we estimate two-photon exchange contributions to the corresponding cross sections. By using a phenomenological model, based on the vector meson dominance, it is argued that the expected contributions are small enough not to effect the BABAR results. As a by product we predict $Br(\eta^\prime\to\mu^+\mu^-)= (1.4\pm 0.2)\times 10^{-7}$. Our results might be useful also in high precision calculations of radiative corrections to the Dalitz decays of pseudoscalar mesons.

Affiliated with

Also associated with

No associations

Rating

On the two-photon contributions to $e^+e^-\toηγ$ and $e^+e^-\toη^\primeγ$ 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 two-photon contributions to $e^+e^-\toηγ$ and $e^+e^-\toη^\primeγ$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the two-photon contributions to $e^+e^-\toηγ$ and $e^+e^-\toη^\primeγ$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-535223