$γγ\to π^0 π^0$ as a test for the existence of a light $σ$ meson

Details $γγ\to π^0 π^0$ as a test for the existence of a light $σ$ meson $γγ\to π^0 π^0$ as a test for the existence of a light $σ$ meson

1998-10-08

arxiv.org/abs/hep-ph/9810299v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures. The sigma width is introduced in a consistent way with chiral symmetry. Results for the cross section are

Scientific paper

We work out predictions of the Linear Sigma Model for the $\gamma \gamma \to\pi^0 \pi^0$ cross section. We consider the sigma width, which is introduced in a consistent way with chiral Ward identities. The results of Chiral Perturbation Theory are recovered in the $m_\sigma \to \infty$ limit. A fit to existing experimental results is consistent with a light and broad $\sigma$ meson.

Affiliated with

Also associated with

No associations

Rating

$γγ\to π^0 π^0$ as a test for the existence of a light $σ$ meson 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 $γγ\to π^0 π^0$ as a test for the existence of a light $σ$ meson, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and $γγ\to π^0 π^0$ as a test for the existence of a light $σ$ meson will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-259157