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π-mesonic decay of the hypertriton
http://hdl.handle.net/10228/2611
http://hdl.handle.net/10228/2611f062c371-e1ec-4919-940b-efccea70f7b9
名前 / ファイル | ライセンス | アクション |
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p1595_1.pdf (169.5 kB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||
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公開日 | 2009-11-26 | |||||||||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
資源タイプ | journal article | |||||||||||
タイトル | ||||||||||||
タイトル | π-mesonic decay of the hypertriton | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
鎌田, 裕之
× 鎌田, 裕之
WEKO
582
× Golak, J× Miyagawa, K× Witała, H× Glöckle, W |
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抄録 | ||||||||||||
内容記述タイプ | Abstract | |||||||||||
内容記述 | 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. | |||||||||||
書誌情報 |
Physical Review C 巻 57, 号 4, p. 1595-1603, 発行日 1998 |
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出版者 | American Physical Society | |||||||||||
DOI | ||||||||||||
関連タイプ | isIdenticalTo | |||||||||||
識別子タイプ | DOI | |||||||||||
関連識別子 | 10.1103/PhysRevC.57.1595 | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 0556-2813 | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 1089-490X | |||||||||||
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権利情報 | ©1998 The American Physical Society | |||||||||||
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出版タイプ | VoR | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
査読の有無 | ||||||||||||
値 | yes | |||||||||||
業績ID | ||||||||||||
5BB6460BF4034D2E492576690003BD72 | ||||||||||||
著者別名 | ||||||||||||
姓名 | Kamada, Hiroyuki | |||||||||||
言語 | en | |||||||||||
姓名 | 鎌田, 裕之 | |||||||||||
言語 | ja | |||||||||||
姓名 | カマダ, ヒロユキ | |||||||||||
言語 | ja-Kana | |||||||||||
情報源 | ||||||||||||
識別子タイプ | URI | |||||||||||
関連識別子 | http://link.aps.org/doi/10.1103/PhysRevC.57.1595 | |||||||||||
関連名称 | http://link.aps.org/doi/10.1103/PhysRevC.57.1595 |