https://doi.org/10.1140/epjc/s10052-009-1140-x
Regular Article - Theoretical Physics
Stable multiquark states with heavy quarks in a diquark model
1
Institute of Physics and Applied Physics, Yonsei University, Seoul, 120-749, Korea
2
Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), 1-1, Oho, Ibaraki, 305-0801, Japan
* e-mail: yasuis@post.kek.jp
Received:
18
January
2009
Revised:
4
June
2009
Published online:
22
September
2009
Based on the color–spin interaction in diquarks, we argue why some multiquark configurations could be stable against strong decay when heavy quarks are included. After showing the stability of previously discussed states we identify new possible stable states. These are the 
tetraquark, the 
pentaquark and the H
c
(udusuc) dibaryon, and so forth.
PACS: 25.75.Nq – / 12.39.Jh – / 14.80.-j – / 14.20.Pt –
© Springer-Verlag , 2009
