https://doi.org/10.1140/epjc/s10052-014-3198-3
Regular Article - Theoretical Physics
A possible global group structure for exotic states
1
School of Physics, Nankai University, Tianjin, 300071, China
2
School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China
3
Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou, 730000, China
* e-mail: xiangliu@lzu.edu.cn
Received:
24
September
2014
Accepted:
22
November
2014
Published online:
5
December
2014
Based on the fact that the long expected pentaquark which possesses the exotic quantum numbers of $$B=1$$ and $$S=1$$ was not experimentally found, although exotic states of $$XYZ$$ have been observed recently, we conjecture that the heavy flavors may play an important role in stabilizing the hadronic structures beyond the traditional $$q\bar{q}$$ and $$qqq$$ composites.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
