No abstract

In order to produce a neutron-rich Lambda hypernucleus for the first time, we carried out an experiment by utilizing the (pi-,K+) double charge-exchange reaction on a 10B target. We observed the production of a 10LambdaLi hypernucleus. The cross section for the Lambda bound region was found to be 11.3+/-1.9 nb/sr with the 1.2 GeV/c incident momentum, which is compared with the 10LambdaB hypernucleus production cross section, 7.8+/-0.3 microb/sr, in the (pi+,K+) reaction with a 1.05 GeV/c incident momentum beam.

No abstract

The present status of hypernuclear γ-ray spectroscopy with Hyperball is summarized. We observed two γ transitions of 16 Λ O(1 − → 1 − , 0 − ) and obtained the strength of the ΛN tensor force. In 10 B(K − , π − γ) data, we did not observe the spin-flip M1 transition of 10 Λ B(2 − → 1 − ), but γ rays from hyperfragments such as 7 Λ Li(7/2 + → 5/2 + ) and 9 Λ Be(3/2 + → 1/2 + ) were observed. In 11 B(π + , K + γ) data, we observed six γ transitions of 11 Λ B. We also attempted an inclusive γ-ray measurement with stopped K − beam. † Present address:

No abstract