|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
18 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Scalar mesons and low-mass sigma: Does the $sigma$ reveal the confinement singularity? | | V.V. Anisovich
; | | Date: |
31 Oct 2005 | | Abstract: | I present a short review of the current understanding of the scalar meson sector, with special attention to the problem of the low-mass $sigma$. The dispersion relation $N/D$-method used for the restoration of the low-energy $pipi$ $(IJ^{PC}=00^{++})$-wave amplitude is discussed. The low-energy $pipi$ amplitude was determined from the data in the energy region 280--500 MeV and it was sewn with the previously found $K$-matrix solution for the region 450--1950 MeV. The $N/D$-amplitude has a pole on the second sheet of the complex-$s$ plane, near the $pipi$ threshold at $sqrt s simeq 430-i325$ MeV, that corresponds to the low-mass $sigma$-meson. I discuss the hypothesis that this pole may be related to the confinement forces, thus being the eyewitness of confinement. | | Source: | arXiv, hep-ph/0510409 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER