$η\to π^0 γγ$ decay in the three-flavor Nambu-Jona-Lasinio model

Details $η\to π^0 γγ$ decay in the three-flavor Nambu-Jona-Lasinio model $η\to π^0 γγ$ decay in the three-flavor Nambu-Jona-Lasinio model

1996-02-08

arxiv.org/abs/hep-ph/9602253v2

Phys.Rev. D54 (1996) 6777-6781

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX, 3 EPS figures, uses epsf.sty and feynman.tex

Scientific paper

10.1103/PhysRevD.54.6777

We study the $\eta \to \pi^0 \gamma \gamma$ decay via the quark-box diagram in the three-flavor Nambu--Jona-Lasinio model that includes the $U_A (1)$ breaking effect. We find that the $\eta$-meson mass, the $\eta \to \gamma \gamma$ decay width and the $\eta \to \pi^0 \gamma \gamma$ decay width are in good agreement with the experimental values when the $U_A (1)$ breaking is strong and the flavor $SU(3)$ singlet-octet mixing angle $\theta$ is about zero. The photon energy and the photon invariant mass spectra in $\eta \to \pi^0 \gamma \gamma$ are compared with those in the chiral perturbation theory.

Affiliated with

Also associated with

No associations

Rating

$η\to π^0 γγ$ decay in the three-flavor Nambu-Jona-Lasinio model 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 $η\to π^0 γγ$ decay in the three-flavor Nambu-Jona-Lasinio model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $η\to π^0 γγ$ decay in the three-flavor Nambu-Jona-Lasinio model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-287436