OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY
	CHING, CR; HIRSCH, M; WU, XR; KLAPDORKLEINGROTHAUS, HV; HO, TH; HIRSCH, M , MAX PLANCK INST NUCL PHYS,W-6900 HEIDELBERG 1,GERMANY.
刊名	PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
	1994
卷号	242 期号:41005 页码:403-422
关键词	Majorana Neutrinos Ge-76 Search Se-82 Xe-136 Te-130 Limit Rates 2-nu
ISSN号	0370-1573
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:A1994NZ93900016
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/11881]
专题	理论物理研究所_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.
推荐引用方式 GB/T 7714	CHING, CR,HIRSCH, M,WU, XR,et al. OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,1994,242(41005):403-422.
APA	CHING, CR,HIRSCH, M,WU, XR,KLAPDORKLEINGROTHAUS, HV,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	CHING, CR,et al."OPERATOR EXPANSION METHOD AND NUCLEAR BETA-BETA-DECAY".PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS 242.41005(1994):403-422.