title: Asymmetry in the nonmesonic weak decay of polarized (5)(Lambda)He hypernuclei
abstract: We have measured the asymmetric emission of protons from the nonmesonic decay of polarized (5)(Lambda)He produced by the (pi(+), K+) reaction. (5)(Lambda)He is an s-shell hypernucleus and its polarization is due to the Lambda. One expects to obtain direct information on the elementary weak Lambda-->p-->np process. The asymmetry parameter has been determined to be 0.24+/-0.22. The implication of the result is discussed.
authors.affiliation: Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan.
authors.initials: S
authors.lastname: Ajimura
authors.initials: K
authors.lastname: Ikeda
authors.initials: M
authors.lastname: Ishikawa
authors.initials: T
authors.lastname: Kishimoto
authors.initials: A
authors.lastname: Okusu
authors.initials: N
authors.lastname: Shinkai
authors.initials: Y
authors.lastname: Tanaka
authors.initials: H
authors.lastname: Ejiri
authors.initials: T
authors.lastname: Nakano
authors.initials: K
authors.lastname: Manabe
authors.initials: T
authors.lastname: Nagae
authors.initials: H
authors.lastname: Noumi
authors.initials: M
authors.lastname: Sekimoto
authors.initials: T
authors.lastname: Shibata
authors.initials: O
authors.lastname: Hashimoto
authors.initials: K
authors.lastname: Maeda
authors.initials: T
authors.lastname: Takahashi
authors.initials: T
authors.lastname: Hasegawa
authors.initials: H
authors.lastname: Bhang
authors.initials: YD
authors.lastname: Kim
authors.initials: H
authors.lastname: Park
authors.initials: M
authors.lastname: Youn