Properties of charmed and bottom hadrons in nuclear medium. Results for Λc+ and Λb hypernuclei

This reports our recent studies on changes in properties of heavy hadrons containing at least a charm or a bottom quark in nuclear matter, and the results for the Λc+ and Λb hypernuclei are studied quantitatively. Comparisons are made with the results for the Λ hypernuclei studied previously in the same approach. It is shown that although the scalar and vector potentials for the Λ, Λc+ and Λb in the hypernuclei multiplet with the same baryon numbers are quite similar, the wave functions obtained, e.g., for 1s1/2 state, are very different. The Λc+ probability density distribution in Λc+209Pb is much more pushed away from the center than that for the Λ in Λ209Pb due to the Coulomb force. On the contrary, the Λb probability density distributions in Λb hypernuclei are much larger near the origin than those for the Λ in the Λ hypernuclei due to its heavy mass. A possibility of B- nuclear bound (atomic) states is also briefly discussed. (author)