Is the scalar meson seen in CELLO data on $\gamma\gamma\rightarrow\pi^+\pi^-$ ?
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We analyze the CELLO angular distributions with the unitary model \cite{KS-86} for helicity 2 amplitude. In contrast to previous analysis \cite{CELLO} we do not see any QED damping. The obtained S--wave does not contradict to low--energy theorem and demonstrates more clealy the resonance--like behaviour near 1.3 Gev.
Keywords
Cite
@article{arxiv.hep-ph/9306249,
title = {Is the scalar meson seen in CELLO data on $\gamma\gamma\rightarrow\pi^+\pi^-$ ?},
author = {A. E. Kaloshin and V. M. Persikov},
journal= {arXiv preprint arXiv:hep-ph/9306249},
year = {2007}
}
Comments
LaTeX, 9 pages, 4 figures (not included, hard copy available upon request), ISU-IAP.Th93-04,\ Irkutsk