Possible Deuteron-like Molecular States Composed of Heavy Baryons

Abstract

We perform a systematic study of the possible loosely bound states composed of two charmed baryons or a charmed baryon and an anti-charmed baryon within the framework of the one boson exchange (OBE) model. We consider not only the $\pi$ exchange but also the $\eta$, $\rho$, $\omega$, $\varphi$ and $\sigma$ exchanges. The $S-D$ mixing effects for the spin-triplets are also taken into account. With the derived effective potentials, we calculate the binding energies and root-mean-square (RMS) radii for the systems ${\Lambda }_c{\Lambda }_c({\bar{\Lambda }}_c)$, ${\Xi }_c{\Xi }_c({\bar{\Xi }}_c)$, ${\Sigma }_c{\Sigma }_c({\bar{\Sigma }}_c)$, ${\Xi }_c^{\prime }{\Xi }_c^{\prime }({\bar{\Xi }}_c^{\prime })$ and ${\Omega }_c{\Omega }_c({\bar{\Omega }}_c)$. Our numerical results indicate that: (1) the H-dibaryon-like state ${\Lambda }_c{\Lambda }_c$ does not exist; (2) there may exist four loosely bound deuteron-like states ${\Xi }_c{\Xi }_c$ and ${\Xi }_c^{\prime }{\Xi }_c^{\prime }$ with small binding energies and large RMS radii.

17 pages, 32 figures

References in corpus (16)

• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Observation of a near-threshold enhancement in the e+e- -->Lambda_c+Lambda_c- cross section using initial-state radiation
• X(3872) and Other Possible Heavy Molecular States
• Is X(3872) {\sl Really} a Molecular State?
• Is X(3872) a molecule?
• Search for new charmonium states in the processes e+ e- --> J/psi D(*) D(*) at sqrt{s} ~ 10.6 GeV
• Is Z^+(4430) a loosely bound molecular state?
• $Z^{+}(4430)$ as a $D_1^{\prime }{D}^{\ast }$ ($D_1{D}^{\ast }$) molecular state
• Dynamics of Hadronic Molecule in One-Boson Exchange Approach and Possible Heavy Flavor Molecules
• X(3872) and the bound state problem of $D^0{\bar{D}}^{\ast 0}$ (${\bar{D}}^0{D}^{\ast 0}$) in a chiral quark model
• The molecular systems composed of the charmed mesons in the $H\bar{S}+h.c.$ doublet
• Possible heavy molecular states composed of a pair of excited charm-strange mesons
• Understanding the newly observed Y(4008) by Belle
• Correlated leading baryon-antibaryon production in e+e- --> ccbar --> Lambda_c+ antiLambda_c- X

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