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Possible Deuteron-like Molecular States Composed of Heavy Baryons | | Ning Lee
; Zhi-Gang Luo
; Xiao-Lin Chen
; Shi-Lin Zhu
; | | Date: |
21 Apr 2011 | | 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 $eta$, $
ho$, $omega$, $phi$ 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
$Lambda_cLambda_c(ar{Lambda}_c)$, $Xi_cXi_c(ar{Xi}_c)$,
$Sigma_cSigma_c(ar{Sigma}_c)$,
$Xi_c^primeXi_c^prime(ar{Xi}_c^prime)$ and
$Omega_cOmega_c(ar{Omega}_c)$. Our numerical results indicate that: (1)
the H-dibaryon-like state $Lambda_cLambda_c$ does not exist; (2) there may
exist four loosely bound deuteron-like states $Xi_cXi_c$ and
$Xi_c^primeXi_c^prime$ with small binding energies and large RMS radii. | | Source: | arXiv, 1104.4257 | | Services: | Forum | Review | PDF | Favorites | |
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