Structure of the D{sub s0}(2317) and the strong coupling constant g{sub D{sub s}{sub 0}}{sub DK} with the light-cone QCD sum rules

Journal Article · Mon May 01 04:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.73.094020· OSTI ID:20782995

Wang, Z G ^[1]; Wan, S L ^[2]

---

1. Department of Physics, North China Electric Power University, Baoding 071003 (China)
2. Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)

In this article, we take the point of view that the charmed scalar meson D{sub s0}(2317) is the conventional cs meson and calculate the strong coupling constant g{sub D{sub s}{sub 0}}{sub DK} within the framework of the light-cone QCD sum rules approach. The numerical values for the large scalar-DK coupling constant g{sub D{sub s}{sub 0}}{sub DK} support the hadronic dressing mechanism. Just like the scalar mesons f{sub 0}(980) and a{sub 0}(980), the D{sub s0}(2317) may have small scalar cs kernel of the typical cs meson size. The strong coupling to the hadronic channels (or the virtual mesons loops) may result in smaller mass than the conventional scalar cs meson in the constituent quark models, and enrich the pure cs state with other components. The D{sub s0}(2317) may spend part (or most part) of its lifetime as virtual DK state.

• OSTI ID: 20782995
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
A0-980 MESONS
COUPLING CONSTANTS
D S MESONS
F0-980 MESONS
KERNELS
LIFETIME
LIGHT CONE
QUANTUM CHROMODYNAMICS
QUARK MODEL
REST MASS
STRONG-COUPLING MODEL
SUM RULES