Leptonic decay constants of the pion and its excitations in holographic QCD

8th International Workshop on Hadron Physics

Krein, Gastão^1

Instituto de Física Teórica, Universidade Estadual Paulista, Ria Dr. Bento Teobaldo Ferraz, 271, São Paulo, SP

01140-070, Brazil^1

关键词: Chiral symmetry;    Holographic model;    Leptonic decay;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/706/4/042004/pdf
DOI  :  10.1088/1742-6596/706/4/042004

来源: IOP

【 摘 要 】

We present results of a recent study of the structure of excited pions within a chiral holographic model for QCD. In particular, we prove that the leptonic decay constants of the excited states of the pion vanish in the chiral limit when chiral symmetry is dynamically broken. Comparisons are made with corresponding results obtained in light-front holography.