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Production of a $^4_Λ He$ hypernucleus in the $^4He(π,K)$ reactions reexamined
| Title: | Production of a $^4_Λ He$ hypernucleus in the $^4He(π,K)$ reactions reexamined |
| Authors: | Harada, Toru Browse this author →KAKEN DB | | Hirabayashi, Yoshiharu Browse this author →KAKEN DB |
| Issue Date: | 2-Aug-2019 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review C |
| Volume: | 100 |
| Issue: | 2 |
| Start Page: | 024605 |
| Publisher DOI: | 10.1103/PhysRevC.100.024605 |
| Abstract: | We investigate theoretically production cross sections of the $J^π = 0^+$ ground state of a $^4_ΛHe$ hypernucleus in the $^4He(pi, K)$ reaction with a distorted-wave impulse approximation using the optimal Fermi-averaged $piN→KΛt$ matrix. We demonstrate the sensitivity of the production cross sections to the Lambda wave functions obtained from $3N-Λ$ potentials and to meson distorted waves in eikonal distortions. It is shown that the calculated laboratory cross sections of the 0(+) ground state in $^4_ΛHe$ amount to $(d \sigma/d \Omega)_{lab} \simeq 11 \mu b/sr$ at $p_π = 1.05 GeV/c$ in the $K$ forward direction because of an advantage of the use of an s-shell target nucleus such as $^4He$. The importance of the recoil effects and the energy dependence of the $π N -> K Λ$ cross sections is also discussed. |
| Rights: | ©2019 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75422 |
| Appears in Collections: | 情報基盤センター (Information Initiative Center) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 平林 義治
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