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

$$T^{+}_{cc}$$の長距離構造の強い相互作用と電弱相互作用による崩壊を用いた探索

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

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

最近発見された$$T^+_{cc}$$状態の長距離構造をその強い相互作用と電磁相互作用による崩壊の分岐の様子から推定することが可能であることを示した。その結果、$$T_{cc}$$の主成分は$$D^{*+}D^0$$であることがわかった。

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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パーセンタイル:98.27

分野:Astronomy & Astrophysics

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