Diquark model of dibaryons
Abstract
A diquark model previously formulated to describe exotic mesons is extended to dibaryons. In the model, dibaryons containing only light quarks are unbound. The $H$ dibaryon, consisting of $uuddss$ quarks, is unstable by about 90 MeV or more, and should decay strongly into two $\Lambda$ baryons. A charmed dibaryon $H_c$, composed of $uuddsc$, is unstable by about 60 MeV or more and should decay strongly into $\Lambda + \Lambda_c$. On the other hand, we find that a bottom dibaryon $H_b$, made of $uuddsb$, may be just bound by about 10 MeV with respect to $\Lambda + \Lambda_b$. If so, it should decay weakly into various final states with a charmed hadron. A possible two-body decay would be into $\Lambda + \Lambda_c$.
- Publication:
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arXiv e-prints
- Pub Date:
- November 1996
- DOI:
- 10.48550/arXiv.hep-ph/9611429
- arXiv:
- arXiv:hep-ph/9611429
- Bibcode:
- 1996hep.ph...11429L
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 4 pages, plaintex, no figures