OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY
文献类型：会议论文
| 作者 | HIRSCH, M; WU, XR; KLAPDORKLEINGROTHAUS, HV; CHING, CR; HO, TH |
| 出版日期 | 1994 |
| 会议日期 | MAY 28-30, 1992 |
| 会议地点 | STONY BROOK, NY |
| 关键词 | MAJORANA NEUTRINOS GE-76 SEARCH SE-82 XE-136 TE-130 LIMIT RATES 2-NU |
| 卷号 | 242 |
| 期号 | 4-6 |
| DOI | 10.1016/0370-1573(94)90174-0 |
| 页码 | 403-422 |
| 英文摘要 | Recent developments in the theoretical description of double beta decay matrix elements are outlined. We present the formalism of the operator expansion method (OEM) and discuss its physical basis. The OEM has been combined with ground state wave functions obtained in a usual QRPA calculation and applied to the problem of evaluating nuclear matrix elements for double beta decay in the 2nubetabeta as well as in the 0nubetabeta decay mode. For 2nubetabeta decay we have calculated the half-lives for all possible beta-beta- decay candidates with A greater-than-or-equal-to 70. We confront our results with the existing experimental data and discuss the quality of the model. 0nubetabeta decay matrix elements are then used to extract upper limits for the effective neutrino mass from published experimental lower half-life limits. The presently sharpest limits come from experiments using isotopically enriched Ge-76. A short discussion is devoted to a recent measurement using U-238 in a radiochemical experiment. Our conclusion is that the experimental result should be interpreted as being due to 2nubetabeta decay, and lepton number violation is not necessary to explain the experimental finding. |
| 会议录 | PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
 |
| 会议录出版者 | ELSEVIER SCIENCE BV |
| 会议录出版地 | AMSTERDAM |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| ISSN号 | 0370-1573 |
| WOS研究方向 | Physics |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23806]  |
| 专题 | SCI会议论文 |
| 作者单位 | 1.CHINESE ACAD SCI,CTR THEORET PHYS,CCAST,WORLD LAB,BEIJING,PEOPLES R CHINA 2.CHINESE ACAD SCI,INST THEORET PHYS,BEIJING,PEOPLES R CHINA |
| 推荐引用方式 GB/T 7714 | HIRSCH, M,WU, XR,KLAPDORKLEINGROTHAUS, HV,et al. OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY[C]. 见:. STONY BROOK, NY. MAY 28-30, 1992. |
入库方式： OAI收割
来源：理论物理研究所
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