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: email@example.com
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