@article{oai:kyutech.repo.nii.ac.jp:00001726,
 author = {Kamada, Hiroyuki and 鎌田, 裕之 and Golak, J and Miyagawa, K and Witała, H and Glöckle, W},
 issue = {4},
 journal = {Physical Review C},
 month = {},
 note = {The π-mesonic decay of the hypertriton is calculated based on a hypertriton wave function and 3N scattering states, which are rigorous solutions of three-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The total π-mesonic decay rate is found to be 101% of the free Λ decay rate, which is close to the experimental data. Together with the nonmesonic decay the total lifetime of Λ3H is predicted to be 2.56 × 10-10 sec which is 3% smaller than for the free Λ particle. The differential decay rate is evaluated as a function of the pion momentum. The decay into the N+d+π channel is stronger than in the 3N+π channel in contrast to the situation for the nonmesonic decay. The ratio for the decay rate into 3He + π- to the decay rate into all channels including π- is found to be 0.379, which is close to the experimental value. We visualize the decay into the dominant channel p+d+π- in a Dalitz plot. Finally we compare the polarization of the outgoing proton in free unpolarized Λ decay to the polarization of 3He in unpolarized Λ3H decay and we compare the closely related asymmetry of π- emitted parallel and antiparallel with respect to the spin direction for a polarized Λ to the corresponding asymmetry for a polarized Λ3H.},
 pages = {1595--1603},
 title = {π-mesonic decay of the hypertriton},
 volume = {57},
 year = {1998},
 yomi = {カマダ, ヒロユキ}
}