Analyzing Ds0*(2317)(+) in the DK molecule picture in the Bethe-Salpeter approach

作者：Xie, Zhen-Xing; Feng, Guan-Qiu; Guo, Xin-Heng^*

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 81(3): 036014.

DOI：10.1103/PhysRevD.81.036014

• ISGUR-WISE FUNCTION
• MESON RESONANCES
• DECAYS
• STATES

We analyze the observed state D-s0*(2317)+ in the Bethe-Salpeter approach. Assuming that D-s0*(2317)+ is an S-wave DK molecular bound state, we establish the Bethe-Salpeter equation for D-s0*(2317)+. With the kernel induced by rho and omega exchange diagrams, we solve the Bethe-Salpeter equation numerically and find that the bound state of DK indeed can exist. We also calculate the decay width of the isospin-violating mode D-s0*(2317)+ -> D-s(+) pi(0) through exchanging vector mesons D* and K* including the eta - pi(0) mixing effect which gives important contribution to the decay width. We find that the decay width is smaller than the resolution of the experimental detector.

• 出版日期2010-2-1
• 单位北京师范大学