2006年
Coincidence exclusive measurement of the nonmesonic weak decay of<inf>Λ</inf>12C
AIP Conference Proceedings
- 巻
- 842
- 号
- 開始ページ
- 528
- 終了ページ
- 530
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1063/1.2220322
We have measured the angular correlation of the pair nucleons np and nn emitted from the nonmesonic weak decay (NMWD) ofΛ12C produced via the (π+,K+) reaction in coincidence measurement. The Λp → np and Λn → nn modes were clearly identified by measuring the back-to-back correlation of the emitted nucleon pairs which is the characteristic of two-body kinematics. From the measured nucleon pair numbers Nnnand Nnp, the ratio Γn/Γpof the partial decay widths Γn(Λn → nn) and Γp(Λp → np) ofΛ12C was extracted to be 0.51 ± 0.13(stat)±0.04(syst); this result is almost free from the ambiguity due to the nuclear final state interaction and 3-body decay process, which were inherent in the previous results. The obtained Γn/ Γpratio ofΛ12C (p-shell) is close to that ofΛ5He (s-shell). The results are consistent with those of recent theoretical calculations. © 2006 American Institute of Physics.
- リンク情報
-
- DOI
- https://doi.org/10.1063/1.2220322
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000241182200148&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33846389170&origin=inward
- ID情報
-
- DOI : 10.1063/1.2220322
- ISSN : 0094-243X
- SCOPUS ID : 33846389170
- Web of Science ID : WOS:000241182200148