Diquark model of dibaryons

Details Diquark model of dibaryons Diquark model of dibaryons

1996-11-26

arxiv.org/abs/hep-ph/9611429v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, plaintex, no figures

Scientific paper

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 $\Lambda + \Lambda_c$.

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