Doubly heavy tetraquarks including one-pion exchange potential
Physics Letters B, ISSN: 0370-2693, Vol: 846, Page: 138221
2023
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Article Description
Spectrum of the doubly heavy tetraquarks is studied in a constituent quark model including one-pion exchange (OPE) potential. Central and tensor forces induced by OPE between two light quarks are considered. Our results show that I(JP)=0(1+) compact bound states are shifted up because of the repulsive central force between q¯q¯. This effect possibly leads to the small binding energy in Tcc. In addition, a I(JP)=1(1+) resonant state is reported with E=10641MeV,Γ=15MeV and E=10640 MeV,Γ=15 MeV, without and with including OPE potential, respectively. The repulsive central force and attractive tensor force almost cancel with each other and leave a small energy difference when OPE potential is included.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0370269323005555; http://dx.doi.org/10.1016/j.physletb.2023.138221; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85173190748&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0370269323005555; https://dx.doi.org/10.1016/j.physletb.2023.138221
Elsevier BV
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