https://doi.org/10.1140/epja/i2012-12061-2
Regular Article - Theoretical Physics
Study of 
five quark system with three kinds of quark-quark hyperfine interaction
1
Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
2
Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, 100049, Beijing, China
3
Graduate University of Chinese Academy of Sciences, 100049, Beijing, China
4
Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, China
5
Research Center for Hadron and CSR Physics, Institute of Modern Physics of CAS and Lanzhou University, 730000, Lanzhou, China
* e-mail: yuanhadron@impcas.ac.cn
Received:
1
March
2012
Revised:
18
March
2012
Accepted:
26
March
2012
Published online:
3
May
2012
The low-lying energy spectra of five quark systems 
(I = 1/2, S = 0) and 
(I = 0, S = 1) are investigated with three kinds of schematic interaction: the chromomagnetic interaction, the flavor-spin-dependent interaction and the instanton-induced interaction. In all the three models, the lowest five-quark state ( or ) has an orbital angular momentum L = 0 and the spin-parity J
P
= 1/2−; the mass of the lowest state is heavier than the lowest state.
© SIF, Springer-Verlag Berlin Heidelberg, 2012
