arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1208.5397hep-ph
收藏

矢量介子手征线性西格玛模型中的伸缩子唯象

Phenomenology of Dilaton in a Chiral Linear Sigma Model with Vector Mesons

Stanislaus Janowski

摘要:

在$U(2)_{R}\times U(2)_{L}$对称线性西格玛模型的框架下,研究了在2GeV以下的标量等谐共振现象.结果表明,在我们喜欢的情况下,共振$f_{0}(1370)$主要是$\bar{q}q$态,而$f_{0}(1500)$主要是胶球态。此外,我们还计算了胶子凝聚的数值,这与格点量子色动力学的结果是一致的。

英文摘要:

In the framework of the $U(2)_{R}\times U(2)_{L}$ symmetric linear sigma model with (axial)vector mesons generalized by including a dilaton field we study the phenomenology of the scalar-isoscalar resonances below 2 GeV. It turns out that, in our favoured scenario, the resonance $f_{0}(1370)$ is predominantly a $\bar{q}q$ state and $f_{0}(1500)$ is predominantly a glueball state. Additionally we are able to calculate the value of the gluon condensate, which is in agreement with lattice QCD results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑