{"title":"用四体簇模型研究10ΛBe和10ΛB超核的结构","authors":"E. Hiyama, Y. Yamamoto","doi":"10.1143/PTP.128.105","DOIUrl":null,"url":null,"abstract":"The structure of the isodoublet hypernuclei, 10 Ba nd 10 Be within the framework of an α + α + Λ + N four-body cluster model is studied. Interactions between the constituent subunits are determined to reproduce reasonably well the observed low-energy properties of the αα, αN , αΛ, ααΛ ,a ndααN subsystems. Furthermore, the two-body ΛN interaction is adjusted to reproduce the 0 + -1 + splitting of 4H. The Λ binding energies of 10 Ba nd 10 Be are 8.76 MeV and 8.94 MeV, respectively. The energy splitting of the 1 − -2 − levels in 10 Bi s 0.08 MeV, which does not contradict the experimental report in BNL-E930. An even-state ΛN charge symmetry breaking (CSB) interaction determined from the A = 4 systems works repulsively by +0.1 MeV (attractively by �0. 1M eV) in 10 Be ( 10 B). We discuss a possibility that an odd-state CSB interaction improves the fitting to the experimental data of A =1 0 double Λ hypernuclei. Subject Index: 214","PeriodicalId":49658,"journal":{"name":"Progress of Theoretical Physics","volume":"128 1","pages":"105-124"},"PeriodicalIF":0.0000,"publicationDate":"2012-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1143/PTP.128.105","citationCount":"33","resultStr":"{\"title\":\"Structure of 10ΛBe and 10ΛB Hypernuclei Studied with the Four-Body Cluster Model\",\"authors\":\"E. Hiyama, Y. Yamamoto\",\"doi\":\"10.1143/PTP.128.105\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The structure of the isodoublet hypernuclei, 10 Ba nd 10 Be within the framework of an α + α + Λ + N four-body cluster model is studied. Interactions between the constituent subunits are determined to reproduce reasonably well the observed low-energy properties of the αα, αN , αΛ, ααΛ ,a ndααN subsystems. Furthermore, the two-body ΛN interaction is adjusted to reproduce the 0 + -1 + splitting of 4H. The Λ binding energies of 10 Ba nd 10 Be are 8.76 MeV and 8.94 MeV, respectively. The energy splitting of the 1 − -2 − levels in 10 Bi s 0.08 MeV, which does not contradict the experimental report in BNL-E930. An even-state ΛN charge symmetry breaking (CSB) interaction determined from the A = 4 systems works repulsively by +0.1 MeV (attractively by �0. 1M eV) in 10 Be ( 10 B). We discuss a possibility that an odd-state CSB interaction improves the fitting to the experimental data of A =1 0 double Λ hypernuclei. Subject Index: 214\",\"PeriodicalId\":49658,\"journal\":{\"name\":\"Progress of Theoretical Physics\",\"volume\":\"128 1\",\"pages\":\"105-124\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-05-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1143/PTP.128.105\",\"citationCount\":\"33\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Progress of Theoretical Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1143/PTP.128.105\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress of Theoretical Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1143/PTP.128.105","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Structure of 10ΛBe and 10ΛB Hypernuclei Studied with the Four-Body Cluster Model
The structure of the isodoublet hypernuclei, 10 Ba nd 10 Be within the framework of an α + α + Λ + N four-body cluster model is studied. Interactions between the constituent subunits are determined to reproduce reasonably well the observed low-energy properties of the αα, αN , αΛ, ααΛ ,a ndααN subsystems. Furthermore, the two-body ΛN interaction is adjusted to reproduce the 0 + -1 + splitting of 4H. The Λ binding energies of 10 Ba nd 10 Be are 8.76 MeV and 8.94 MeV, respectively. The energy splitting of the 1 − -2 − levels in 10 Bi s 0.08 MeV, which does not contradict the experimental report in BNL-E930. An even-state ΛN charge symmetry breaking (CSB) interaction determined from the A = 4 systems works repulsively by +0.1 MeV (attractively by �0. 1M eV) in 10 Be ( 10 B). We discuss a possibility that an odd-state CSB interaction improves the fitting to the experimental data of A =1 0 double Λ hypernuclei. Subject Index: 214
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