Gamma spectroscopy of p-shell hypernuclei and ΛN spin-dependent interactions - Report of BNL E930

High resolution gamma spectroscopy of hypernuclei using Hyperball has revealed detailed level structure of several p-shell Lambda hypernuclei and allowed us to extract the strengths of LambdaN spin-dependent interactions. In the experiment BNL E930, we observed E2(3/2(+),5/2(+) --> 1/2(+)) transitions in Be-Lambda(9) and confirmed a small size of the Lambda-spin-dependent O-16(Lambda) and N-15(Lambda) in order to investigate dependent spin-orbit force. Recently we took data for A A the strength of the LambdaN tensor force. In a preliminary analysis, we observed gamma rays of O-16(Lambda) and N-15(Lambda).