Nuclear transition matrix elements for neutrinoless double-β decay of 76Ge isotope within PHFB approach

被引：3

作者：

Rath, P. K. ^{[1
]}

Kumar, A. ^{[1
]}

Chandra, R. ^{[2
]}

Gautam, R. ^{[2
]}

Raina, P. K. ^{[3
]}

Dixit, B. M. ^{[4
]}

机构：

[1] Univ Lucknow, Dept Phys, Lucknow 226007, Uttar Pradesh, India

[2] Babasaheb Bhimrao Ambedkar Univ, Dept Phys, Lucknow 226025, Uttar Pradesh, India

[3] Indian Inst Technol Roper, Dept Phys, Rupnagar 140001, Punjab, India

[4] SRM Univ, Fac Phys Sci, Barabanki 225013, India

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2019年 / 28卷 / 11期

关键词：

PHFB model; neutrinoless double beta decay; nuclear transition matrix elements; SUPPRESSION;

D O I：

10.1142/S0218301319500964

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Employing projected-Hartree-Fock-Bogoliubov (PHFB) model, nuclear transition matrix elements (NTMEs) M-(K) for the neutrinoless double-beta(-) decay of Ge-76 isotope are calculated within mechanisms involving light as well as heavy Majorana neutrinos, and classical Majorons. By considering the spin-tensor decomposition of realistic KUO and empirical JUN45 effective two-body interactions, it is noticed that the effect due to SRC on NTMEs M-(0 nu) and M-(0N) involving the exchange of light and heavy Majorana neutrinos, respectively, is maximally incorporated by the central part of the effective two-body interaction, which varies by a small amount with the inclusion of spin-orbit and tensor components. Presently, the model-dependent uncertainties in the average NTMEs (M) over bar ((0 nu)) and (M) over bar ((0N)) turn out to be about 10% and 37%, respectively.

引用

页数：12

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