Analysis of theT<States inCo55

Abstract

Previous data from the ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}({}_{}{}^3{}_{}{}^{}\mathrm{He},d){}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$ reaction are reanalyzed. Deuteron groups corresponding to lowlying states in ${}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$ and having $l_p=1\mathrm{}$ are identified as $T_{<}$ states and their existence is explained. States at 3.327- and 4.185-MeV excitation in ${}_{}{}^{55}{}_{}{}^{}\mathrm{Co}$ are analyzed and found to contain a large percentage of the missing $l_p=3\mathrm{}$ strength of the $T_{<}$ states. Spectroscopic factors are extracted and the strength of the isobaric spin-dependent potential is calculated.