X(1835) and the new resonances X(2120) and X(2370) observed by the BES collaboration

作者：Liu Jia Feng^*; Ding Gui Jun; Yan Mu Lin

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 82(7): 074026.

DOI：10.1103/PhysRevD.82.074026

We calculate the decay widths of both the second and the third radial excitations of eta and eta' within the framework of the (3)P(0) model. After comparing the theoretical decay widths and decay patterns with the available experimental data of eta(1760), X(1835), X(2120), and X(2370), we find that the interpretation of eta(1760) and X(1835) as the second radial excitation of eta and eta' crucially depends on the measured mass and width of eta(1760), which is still controversial experimentally. We suggest that there may be sizable p (p) over bar content in Xd1835_. Xd2120_ and Xd2370_ cannot be understood as the third radial excitations of eta and eta'. X(2370) is probably a mixture of eta'(4(1)S(0)) and glueball.

• 出版日期2010-10-29
• 单位中国科学技术大学