VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay

Details VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay

2003-02-26

arxiv.org/abs/hep-ph/0302240v1

Phys.Rev. D67 (2003) 073008

Physics

High Energy Physics

High Energy Physics - Phenomenology

to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.67.073008

In an attempt to explain the latest experimental result about the branching ratio of $\omega\to \pi^0\pi^0\gamma$ decay we reexamine the decay mechanism of this decay in a phenomenological framework in which the contributions of VMD, chiral loops, $\sigma$-meson intermediate state amplitudes and the effects of $\omega-\rho$ mixing are considered. We conclude that in order to obtain the experimental value of the branching ratio $B(\omega\to \pi^0\pi^0\gamma)$ $\sigma$-meson amplitude which makes a substantial contribution should be included into the reaction mechanism and the effects of $\omega-\rho$ mixing should be taken into account. We also estimate the coupling constant $g_{\omega\sigma\gamma}$ as $g_{\omega\sigma\gamma}=0.11$ which is much smaller than the values suggested by light cone QCD sum rules calculations.

Affiliated with

Also associated with

No associations

Rating

VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay 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 VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-529412