https://doi.org/10.1140/epjc/s10052-014-3246-z
Regular Article - Theoretical Physics
and 
as the 1D 
states
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
* e-mail: zgwang@aliyun.com
Received:
20
October
2014
Accepted:
22
December
2014
Published online:
22
January
2015
In this article, we take the and as the 
and 
states, respectively, and we study their strong decays with the heavy meson effective theory by including the chiral symmetry-breaking corrections. We can reproduce the experimental data 
with suitable hadronic coupling constants; the assignment of the 
as the is favored, the chiral symmetry-breaking corrections are large. Furthermore, we obtain the analytical expressions of the decay widths, which can be confronted with the experimental data in the future to fit the unknown coupling constants. The predictions of the ratios among the decay widths can be used to study the decay properties of the and so as to identify them unambiguously. On the other hand, if the chiral symmetry-breaking corrections are small, the large ratio 
requires that the consists of at least the four resonances, , 
, 
, .
© SIF and Springer-Verlag Berlin Heidelberg, 2015
