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OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY
HIRSCH, M; WU, XR; KLAPDORKLEINGROTHAUS, HV; CHING, CR; HO, TH; HIRSCH, M , MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY.
1994
发表期刊PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
ISSN0370-1573
卷号242期号:41005页码:403-422
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.
部门归属CHINESE ACAD SCI,CTR THEORET PHYS,CCAST,WORLD LAB,BEIJING,PEOPLES R CHINA; CHINESE ACAD SCI,INST THEORET PHYS,BEIJING,PEOPLES R CHINA
关键词Majorana Neutrinos Ge-76 Search Se-82 Xe-136 Te-130 Limit Rates 2-nu
学科领域Physics
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收录类别SCI
WOS记录号WOS:A1994NZ93900016
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被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11881
专题理论物理所1978-2010年知识产出
通讯作者HIRSCH, M , MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY.
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HIRSCH, M,WU, XR,KLAPDORKLEINGROTHAUS, HV,et al. OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,1994,242(41005):403-422.
APA HIRSCH, M,WU, XR,KLAPDORKLEINGROTHAUS, HV,CHING, CR,HO, TH,&HIRSCH, M , MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY..(1994).OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY.PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,242(41005),403-422.
MLA HIRSCH, M,et al."OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY".PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS 242.41005(1994):403-422.
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