Asymptotic normalization coefficients and neutron halo of the excited states in B-12 and C-13

The asymptotic normalization coefficients and root-mean-square radii for the last neutron in B-12 and C-13 have been determined by measuring the transfer differential cross sections of B-11(d,p)B-12 and C-12(d,p)C-13 reactions at very forward angles at 11.8 MeV. It is found that the second (J(pi)=2(-)), third (J(pi)=1(-)) excited states in B-12, and the first (J(pi)=1/2(+)) excited state in C-13 are single neutron halo states, whereas the third (J(pi)=5/2(+)) excited state in C-13 is a neutron skin state.