How to parameterize a light and broad resonance (the $σ$ meson)
| dc.creator | Zheng, Hanqing | |
| dc.date | 2003-04-17 | |
| dc.date | 2003-08-06 | |
| dc.date.accessioned | 2026-07-07T03:49:27Z | |
| dc.date.available | 2026-07-07T03:49:27Z | |
| dc.description | We point out that a commonly used parameterization form to describe the $σ$ resonance is problematic by introducing a spurious singularity below two particle threshold, on the second sheet. The spurious singularity violates chiral symmetry and leads to sizable contribution when the resonance is light and broad -- as what happens to the $σ$ resonance, hence must be removed. | |
| dc.description | A mistaken remark concerning the property of deeply bounded resonances isremoved and corrected | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0304173 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0304173 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/42408 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | How to parameterize a light and broad resonance (the $σ$ meson) | |
| dc.type | text |