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Tetraquarks with colour-blind forces in chiral quark models

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arxiv hep-ph/9609348 v1 pith:CKVJMHGV submitted 1996-09-13 hep-ph nucl-th

S.Pepin , Fl. Stancu , M. Genovese , J.-M. Richard This is my paper · ORCID
classification hep-phnucl-th
keywords interactionmodelssystemsbindschiralchromomagneticcolour-blindcontributions
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abstract

We discuss the stability of multiquark systems within the recent model of Glozman et al. where the chromomagnetic hyperfine interaction is replaced by pseudoscalar-meson exchange contributions. We find that such an interaction binds a heavy tetraquark systems $QQ\bar q\bar q$ ($Q=c,b and q=u,d)$ by 0.2-0.4 GeV. This is at variance with results of previous models where $cc\bar q\bar q$ is unstable.

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  1. Production mechanism of doubly charmed exotic mesons $T_{cc}$

    hep-ph 2025-07 conditional novelty 4.0 of 10

    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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