Zero temperature properties of mesons and baryons from an extended linear sigma-model

FAIR NExt generation of ScientistS 2013

Kovács, P.^1 ; Wolf, Gy^1

Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, XII. Konkoly Thege Miklós út 29-33, 1121 Budapest, Hungary^1

关键词: Decay widths;    Minimalization;    Model parameters;    Physical quantities;    Sigma model;    Tree level;    Zero temperatures;    Zero-temperature properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/503/1/012035/pdf
DOI  :  10.1088/1742-6596/503/1/012035

来源: IOP

【 摘 要 】

An extended linear sigma model with mesons (q states) and baryons (qqq states) is presented. The model contains a low energy multiplet for every hadronic particle type, namely a scalar, a pseudoscalar, a vector and an axialvector nonet, a baryon octet and a baryon decuplet. The model parameters are determined through a multiparametric minimalization with the help of well known physical quantities. It is found that the considered zero temperature quantities (masses and decay widths) can be described well at tree-level and are in good agreement with the experimental data.