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アイテム
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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| アイテムタイプ | 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 | en | |||||||||||||
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| 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. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : Physical Review C 巻 57, 号 4, p. 1595-1603, 発行日 1998 |
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| 出版者 | American Physical Society | |||||||||||||
| 言語 | en | |||||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1103/PhysRevC.57.1595 | |||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 0556-2813 | |||||||||||||
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| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 1089-490X | |||||||||||||
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| 権利情報 | ©1998 The American Physical Society | |||||||||||||
| 出版タイプ | ||||||||||||||
| 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 | ||||||||||||||
| 値 | 5BB6460BF4034D2E492576690003BD72 | |||||||||||||
