Possible ${\Sigma }_c^{\ast }\bar{\Sigma }$ molecular states

Abstract

We investigate the possibility of deuteron-like ${\Sigma }_c^{\ast }\bar{\Sigma }$ bound states within the one-boson-exchange model and systematically analyze the effects of the contact-range ${\delta }^3(\vec{r})$ potential, the tensor term from the vector-meson exchange, and nonlocal potentials due to the dependence on the sum of the initial and final state center-of-mass momenta. We find that the pion-exchange potential including the ${\delta }^3(\vec{r})$ term and the tensor term of the $\rho$-exchange potential exhibit comparable magnitudes but opposite signs for any $S$-wave baryon-antibaryon systems. For the ${\Sigma }_c^{\ast }\bar{\Sigma }$ system, it is most likely to form bound states with mass around 3.7 GeV in the $I(J^P)=0(2^{-})$ and $1(2^{-})$ channels.

22 pages, 11 figures

References in corpus (16)

• Multiquark Resonances
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Exotics: Heavy Pentaquarks and Tetraquarks
• A survey of heavy-heavy hadronic molecules
• Is X(3872) {\sl Really} a Molecular State?
• Is X(3872) a molecule?
• Observation of a near-threshold structure in the $K^{+}$ recoil-mass spectra in $e^{+}{e}^{-}\to K^{+}(D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0)$
• Isospin breaking effects in the X(3872) resonance
• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
• Heavy-quark spin and flavour symmetry partners of the X(3872) revisited: what can we learn from the one boson exchange model?
• Is Z^+(4430) a loosely bound molecular state?
• Dynamics of Hadronic Molecule in One-Boson Exchange Approach and Possible Heavy Flavor Molecules
• Hadronic Molecular States Composed of Heavy Flavor Baryons
• The Spin-orbit force, recoil corrections and possible $B{\bar{B}}^{\ast }$ and $D{\bar{D}}^{\ast }$ molecular states
• $\sigma$ exchange in the one-boson exchange model involving the ground state octet baryons

Cited by in corpus (1)

• Spectrum of the molecular hexaquarks