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Probing the long-range structure of the $$T^{+}_{cc}$$ with the strong and electromagnetic decays

Meng, L.*; Wang, G.-J.*; Wang, B.*; Zhu, S.-L.*

We investigate the kinetically allowed strong and electromagnetic decays of the recently observed $$T^+_{cc}$$. Our results show that the decay width of $$T_{cc}to D^0D^0pi^+$$ is the largest one, which is just the experimental observation channel. Our theoretical total strong and radiative widths are in favor of the $$T_{cc}$$ as a $$D^{*+}D^0$$ dominated bound state. Our calculation is cutoff-independent and without prior isospin assignment. The absolute partial widths and ratios of the different decay channels can be used to test the structure of $$T_{cc}$$ state when the updated experimental results are available.

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