Significance of the Sigma Meson in Hadron Physics (QCD) and Possible Experiments to Observe it
| dc.creator | Kunihiro, Teiji | |
| dc.date | 1999-05-06 | |
| dc.date.accessioned | 2026-07-07T04:07:02Z | |
| dc.date.available | 2026-07-07T04:07:02Z | |
| dc.description | We first discuss the theoretical and phenomenological significance of the sigma meson ($σ$) in QCD. It is indicated that if the collective modes with the mass 500-600 MeV exists in the $I=J=0$ channel, various empirical facts in hadron physics can be naturally accounted for, which otherwise would remain mysterious. We propose several experiments to produce and detect the $σ$ in nuclei using nuclear and electro-magnetic projectiles. The recent CHAOS data which show a spectral enhancement near the 2 $m_π$ threshold in the $σ$ channel from the reactions A$(π, 2π)$A' where A and A' denotes nuclei is interpreted as a possible evidence of a partial restoration of chiral symmetry in nuclei. | |
| dc.description | Invited talk presented at the Workshop on Hadron Spectroscopy (whs99), Frascati- INFN, March 8 - 12, 1999. 8 pages with one figure | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9905262 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9905262 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48996 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | Nuclear Experiment | |
| dc.subject | Nuclear Theory | |
| dc.title | Significance of the Sigma Meson in Hadron Physics (QCD) and Possible Experiments to Observe it | |
| dc.type | text |