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Pole analysis on the doubly charmed meson in $D^0D^0\pi^+$ mass spectrum
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abstract
In this paper we study the scattering amplitudes of $D^{0}D^{0}\pi^+$-$D^{*+}D^{0}$ coupled channels based on $K$-matrix within the Chew-Mandelstam formalism. The $D^{0}D^{0}\pi^{+}$ invariant mass spectrum of LHCb is fitted and the pole parameters of the $T_{cc}^+$ are extracted. The analysis of pole behavior suggests that the $T_{cc}^+$ may originate from a $D^{*+}D^{0}$ virtual state and is formed as a result of an interplay between an attractive interaction between $D^0$ and $D^{*+}$ and coupling to $D^{0}D^0\pi^+$ channel.
Forward citations
Cited by 2 Pith papers
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Production mechanism of doubly charmed exotic mesons $T_{cc}$
A coupled-channel model generates the Tcc(3875)+ as an isovector DD* molecule and predicts three additional J=1 tetraquark states, including a negative-parity resonance.
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Composite nature of the $T_{cc}$ state
A CDD-pole fit to the LHCb Tcc line shape yields a compositeness of 0.23, suggesting the Tcc is mostly compact tetraquark rather than a D*D molecule.
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