Abstract
Non-mesonic weak-decay protons (NM-p) and mesonic weak-decay pions (M- π) from Λ produced by the ( π +, K +) reaction on 12C have been measured. NM-p from the 11 Λ B( 5 2 + ) produced through the proton-unbound states in 12 ΛC and NM-p and M- π associated with the quasi-bound region ( E x ≈ 20 MeV) in 12 ΛC show finite asymmetries of A 1 = − 0.20 to − 0.35 with respect to the reaction plane. These results indicate finite polarizations of the relevant Λ-hypernuclei and asymmetric NM weak decays.
Published Version
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