Abstract
In this paper, we calculate the strong decays of [Formula: see text] heavy-light states, namely, the charmed [Formula: see text] meson and the charm-strange [Formula: see text] meson. The method we adopt is the reduction formula, PCAC relation and low energy theorem, following which, the transition amplitudes are calculated. The wave functions of the heavy mesons involved are achieved by solving the instantaneous Bethe–Salpeter equation. As the OZI-allowed two-body strong decays give the dominant contribution, they can be used to estimate the total widths of mesons. Our results are: [Formula: see text] and [Formula: see text]. The ratios of branching ratios of two main channels are [Formula: see text] and [Formula: see text], respectively.
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