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$T_{cc}^{+}(3875)$ relevant $DD^*$ scattering from $N_f=2$ lattice QCD

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arxiv 2206.06185 v3 pith:MG2X3JOJ submitted 2022-06-13 hep-lat hep-exhep-ph

Siyang Chen , Chunjiang Shi , Ying Chen , Ming Gong , Zhaofeng Liu , Wei Sun , Renqiang Zhang This is my paper · ORCID
classification hep-lathep-exhep-ph
keywords channelenergyinteractionisospinlatticescatteringanalyzingapprox
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The $S$-wave $DD^*$ scattering in the isospin $I=0,1$ channels is studied in $N_f=2$ lattice QCD at $m_\pi\approx 350$ MeV. It is observed that the $DD^*$ interaction is repulsive in the $I=1$ channel when the $DD^*$ energy is near the $DD^*$ threshold. In contrast, the $DD^*$ interaction in the $I=0$ channel is definitely attractive in a wide range of the $DD^*$ energy. This is consistent with the isospin assignment $I=0$ for $T_{cc}^+(3875)$. By analyzing the components of the $DD^*$ correlation functions, it turns out that the quark diagram responsible for the different properties of $I=0,1$ $DD^*$ interactions can be understood as the charged $\rho$ meson exchange effect. This observation provides direct information on the internal dynamics of $T_{cc}^+(3875)$.

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Forward citations

Cited by 6 Pith papers

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