Gómez Nicola, A.; Ruiz de Elvira, J. (2018). Chiral and U(1)A restoration for the scalar and pseudoscalar meson nonets. Physical review. D - particles, fields, gravitation, and cosmology, 98(1) American Physical Society 10.1103/PhysRevD.98.014020
|
Text
PhysRevD.98.014020.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (924kB) | Preview |
We analyze the restoration pattern of the members of the scalar and pseudoscalar meson nonets under chiral Oð4Þ and Uð1ÞA symmetries. For that purpose, we exploit QCD Ward identities (WI), which allow one to relate susceptibilities with quark condensates, as well as susceptibility differences with meson vertices. In addition, we consider the low-energy realization of QCD provided by Uð3Þ chiral perturbation theory (ChPT) at finite temperature to perform a full analysis of the different correlators involved. Our analysis suggests Uð1ÞA partner restoration if chiral symmetry partners are also degenerated. This is also confirmed by the ChPT analysis when the light chiral limit is reached. Partner degeneration for the I 1⁄4 1=2 sector, the behavior of I 1⁄4 0 mixing and the temperature scaling of meson masses predicted by WI are also studied. Special attention is paid to the connection of our results with recent lattice analyses.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Ruiz de Elvira Carrascal, Jacobo |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1550-7998 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
30 Aug 2018 15:50 |
Last Modified: |
05 Dec 2022 15:17 |
Publisher DOI: |
10.1103/PhysRevD.98.014020 |
ArXiv ID: |
1803.08517 |
BORIS DOI: |
10.7892/boris.119663 |
URI: |
https://boris.unibe.ch/id/eprint/119663 |
Actions (login required)
 |
Edit item |