Lambda(+)(c) and Lambda(b) hypernuclei

Lambda(c)(+) and Lambda(b) hypernuclei are studied in the quark-meson coupling (QMC) model. Comparisons are made with the results for Lambda hypernuclei studied in the same model previously. Although the scalar and vector potentials felt by the Lambda, Lambda(c)(+), and Lambda(b) in the corresponding hypernuclei multiplet which has the same baryon numbers are quite similar, the wave functions obtained, e.g., for the 1s(1/2) state, are very different. The Lambda(c)(+) baryon density distribution in Pb-+209(Lambdac) is much more pushed away from the center than that for the Lambda in Pb-209(Lambda) due to the Coulomb force. On the contrary, the Lambda(b) baryon density distributions in Lambda(b) hypernuclei are much larger near the origin than those for the Lambda in the corresponding Lambda hypernuclei due to its heavy mass. It is also found that level spacing for the Lambda(b) single-particle energies is much smaller than that for the Lambda and Lambda(c)(+).